Everyone loves a good photobomb. Whether you’re the one doing the bombing or the one being bombed, the results are always hilarious and memorable. But these kinds of photos are even funnier when celebrities join in on the action.

Over the years, everyone from Michael Cera to Arnold Schwarzenegger has joined in on the photobombing fun, busting into snaps of their celebrity friends and random fans alike. Here are 55 of the very best examples.

1) Right Into The Camera

These two guys were chilling at a baseball game and decided to snap a selfie while taking a break from the on-field action. Fortunately, The Office star John Krasinski was perfectly placed to make their photo a thousand times better! The fact that he’s staring right into the camera just makes the image simply amazing.

2) A Sneaky Jake Gyllenhaal Appears!

This couple were out on the town when they decided to take a cute selfie together. Just like John Krasinski in the previous image, Donnie Darko and Nightcrawler star, Jake Gyllenhaal, was just in the right spot to make their photo one to remember!

3) Chris Hemsworth Is Too Cool For School

Who wouldn’t want Chris Hemsworth, a.k.a. Thor, to stroll into the background of their photo like this!? The muscular Australian actor is casually posing on the other side of the pool, sneaking his way into the frame.

4) A Very Special Wedding

We can all pretty much agree that Keanu Reeves is one of the amazing men on the planet. The legendary star of the John Wick franchise has a habit of randomly appearing in wedding photos whenever he spots a happy couple saying “I do!”

5) Jack Black Says ‘What’s Up’

Iconic Hollywood actor Tom Hanks was posing for a photo with some fans when his fellow star, Jack Black, decided to get in on the action, pulling one of his signature funny faces in the background of this image.

6) Thom Yorke Knows How To Disappear Completely

This lady was visiting an art gallery and posing for a photo in front of an incredible painting. Little did she know that Radiohead frontman, Thom Yorke, was also posing for her photo, pulling a funny face off to the side.

7) Two For One

This lady was posing for a snap alongside iconic country music singer and songwriter, Keith Urban. Another musical icon, Taylor Swift, happened to be strolling by at the same time. Poor Taylor looks a little guilty to be intruding on the image!

8) Professor X Is Always Watching

Back during the filming of the classic X-Men movies, Hugh Jackman was posing for a photo with some fans, who had no idea that another leading man from the films, Patrick Stewart, was also grinning happily in the background.

9) Oh Jonah

Once again, someone got a little more than they bargained for while posing for a photo with a celebrity! This woman was thrilled to meet Jimmy Fallon and wanted a selfie to preserve the moment forever. Jonah Hill had other ideas!

10) The Irony

In one of the best examples of photobomb irony, this old lady is wearing a Slash T-shirt, blissfully unaware that the legendary Guns N’ Roses guitarist is standing right behind her!

11) The Boss

Plenty of people try to snap selfies during concerts, hoping that they’ll be able to capture themselves and their idols in the same frame. This girl got super lucky, however, when Bruce ‘The Boss’ Springsteen saw what she was doing and actually posed for the photo!

12) Cheeky Will Wheaton

While a couple of guys were posing with Felicia Day, her The Guild co-star, Will Wheaton, wanted to get in on the action and ruin the image with a cheeky face.

13) Surprise!

Imagine standing around, living your life, when suddenly one of the greatest singers of our times steps up behind and puts her arms around your shoulders. Hello Adele. What a feeling!

14) Michael Cera: Act 1

Be prepared to see Michael Cera more than once in this list. The Arrested Development star is a serial photobomber, and there are dozens of examples of his antics out there.

15) Best. Wedding. Ever.

Bradley Cooper happened to be stopping off at his old college when he saw a couple were celebrating their wedding on the very same day. So he decided to bust into their photoshoot! We’re pretty sure they didn’t mind too much.

16) Check Out Those Abs

Canadian Prime Minister Justin Trudeau is well-known for his athletic body and love of sports. He was casually surfing on this beach in his free time when he had to step aside for a wedding party to roll on through.

17) Nice To Meet You, Tom Hanks!

Yet again, a couple celebrating the happiest day of their lives got a big dose of good luck when Toy Story, Forrest Gump, and Philadelphia star Tom Hanks was jogging through the very same park and stopped by to wish them well.

18) A Double Whammy

This guy thought he was only posing with Modern Family star, Eric Stonestreet. In actual fact, another TV legend, Neil Flynn (who played the janitor in Scrubs) has sneakily made his way into the image as well.

19) A Very Keanu Wedding

Matrix man Keanu Reeves found another happy couple on his many adventures and decided to play a part in their photoshoot. The Speed star adds so much ‘cool factor’ to this photo.

20) A Happy Couple

The story here is that a girl and her friend had spotted former celebrity couple, Andrew Garfield and Emma Stone, dining in the same restaurant as them. They wanted to take a photo, but they didn’t want it to be too obvious. Garfield and Stone quickly saw what they were doing, however, and decided to pose for the snap!

21) The Wedding Singer

Adam Sandler made a name for himself in movies like The Wedding Singer, and he was randomly in the area when this couple were taking some beautiful wedding photos for their big day.

22) We See You, Aquaman

Jason Momoa, star of Game of Thrones, was fully immersed in his Aquaman persona while sneaking across the seascape background of this lovely photo.

23) Out For A Jog

A slightly sweaty Amu Schumer was out for a jog when she spotted a happy couple posing for some engagement photos. Naturally, she had to get involved and pose for a few snaps before carrying on her way.

24) Cera Strikes Again!

Here he is again. Michael Cera, of Scott Pilgrim vs. the World fame, is in just the right place at just the right time to add an extra humorous element to this amusing photo of a guy posing with a pair of parrots.

25) Two Photos In One

Jimmy Fallon has become one of the world’s best photobombers. He’s always looking for new opportunities to get involved with other people’s snaps and selfies, and he often gets other celebrities involved in the fun too. During the Super Bowl back in 2015, Fallon teamed up with the two best Chrises around, Chris Pratt and Chris Evans, to photobomb football fans with hilarious poses.

26) Three’s A Crowd, Jason

We all know Jason Segel as one of the funniest men in the TV and movie world, famously making us laugh time and time again in classics like How I Met Your Mother, I Love You, Man and The Muppets. Here, once again, he’s putting smiles on faces with a super funny photobomb moment.

27) Hungover?

Ken Jeong, star of Community and The Hangover film series, was hanging out at an LA Dodgers game and decided to pull a funny face and leave his mark on this unforgettable selfie.

28) She Doesn’t Look Too Happy

This guy wanted to get a photo with Rihanna at all costs, but she definitely doesn’t look too thrilled to see the camera pointing in her direction!

29) Fallon And Hamm

Once more, famed funny man Jimmy Fallon hired a celebrity buddy, John Hamm, to photobomb some family photos around New York City, with hilarious results.

30) A Princely Photobomb

Not many people can say they’ve been photobombed by a member of the British royal family, but these guys sure can! The incident occurred at the Commonwealth Games, where Prince Harry stuck two thumbs up in the background of this photo of some rugby coaches.

31) Spaced Out

Hanging out in areas where celebrities like to go jogging seems to be a great way to get some unexpected photos with them! This woman was simply strolling through the park, enjoying her day, when Kevin Spacey passed by.

32) Soccer Rivals

British pop sensation Ed Sheeran is a big fan of soccer club Ipswich Town FC. Here, we can see him ruining the photo of some rival fans on the day of a big game.

33) Sleeping On The Job

Imagine waking up and learning that you could have met Tom Hanks, if only you hadn’t been so sleepy! This poor, unfortunate kid passed out in a pizzeria, completely unaware that the famous Hollwood icon was dining in the same spot.

34) Cera’s Back Again

Michael Cera is one of the most accomplished celebrity photobombers out there and features multiple times throughout this list. He’s always popping up in the background of images when people least suspect him, and for this photo, he was joined by Alia Shawkat too.

35) A Girl Loves To Photobomb

Maisie Williams, famed for her role as Arya Stark in Game of Thrones, interrupted this dude’s blurry selfie with a cheeky smile over in the corner.

36) Keanu Gets Around

We’re back with not one, but four fabulous examples of Keanu Reeves photobombing friends, strangers, and fans in various locations. The Bill and Ted star never passes up an opportunity to get involved in other people’s pictures.

37) Classic Jesse

This couple were enjoying some fun in the sun at Coachella and stopped to snap a selfie, blissfully unaware that Aaron Paul, who played Jesse Pinkman in Breaking Bad, was hanging out in the background and caught a glimpse of their camera.

38) Dude Looks Like A Lady

Steven Tyler, legendary rock and roll frontman of Aerosmith, seems a little unsure over whether he really wants to be in this photo or not. Either way, the long haired star’s image has been captured forever more beside this smiling lady.

39) The Walking Dead VS Game Of Thrones

A couple of Game of Thrones fans were posing for a photo with two of the show’s biggest stars, Lena Headey and Peter Dinklage (who played Cersei Lannister and Tyrion Lannister, respectively) when Norman Reedus (Daryl Dixon in The Walking Dead) chose to sneak in behind the scene.

40) Even Presidents Photobomb

Proving that you’re never too old to photobomb, former president of the United States, Bill Clinton, can be spotted here peering into the background as this little girl gets her picture taken. Unfortunately, the girl wasn’t even looking at the camera at the time!

41) So In Sync

These guys were hanging out at a Justin Timberlake concert and wanted to snap a selfie while the star was singing up on stage. Justin noticed them getting ready to pose and decided to totally steal their thunder.

42) Oh Hi There!

Here’s one of the most famous celebrity photobombs of all time! A newly-wed couple went right into the heart of Manhattan for some romantic photos. As luck would have it, Zach Braff of Scrubs fame was passing by and stopped in the middle of the street to smile for the camera.

43) One More Michael Cera

Michael Cera is just too good at photobombing! It’s clearly his special skill and he’s constantly appearing in the background and over the shoulder of his friends and fans.

44) Lord Of The Photobombs

Elijah Wood’s most famous role was as the little hobbit, Frodo, in the Lord of the Rings films. In real life, he’s not quite so short and was just the right height to break into this photo of a few friends.

45) Trudeau: The Return

Canadian PM Justin Trudeau is back for more, grinning cheerfully in the background as these ladies posed for a photo and hoped to catch the political leader unawares in the background.

46) A Royal Occasion

Prince Harry is known for his sense of humor, always joking around. We can see a perfect example of the prince’s funny personality here as he pulls a funny face to bring this simple selfie to life.

47) Over The Shoulder

The best photobombs typically feature someone’s head seeming to come out of nowhere. But this one is even better, as the head in question belongs to stand-up comedy legend Dave Chappelle!

48) Nothing Beats Nic Cage

This new mom was posing with her baby when Nicolas Cage, famed for his roles in movies like Con Air, The Rock, and Face/Off stepped in and started waving at the camera.

49) I Am The One Who Photobombs

A Modern Family fan and her dog were thrilled to meet up with Ty Burrell. They got together and prepared to take a photo, but then Breaking Bad star, Bryan Cranston, stepped in out of nowhere to ‘ruin’ the moment.

50) Arnie In Paris

Millions of people visit the beautiful city of Paris each and every year, and pretty much every single one of them poses for a photo in front of the world famous Eiffel Tower. The people in this photo, however, are the only ones to ever get photobombed by The Terminator and Total Recall star, Arnold Scwharzenegger, who was cycling by and stopped right in front of their camera.

51) The Terminator VS Rocky

Arnie strikes again! The iconic actor and bodybuilder has always had a long-standing rivalry with his fellow action movie star, Sylvester Stallone. When Schwarzenegger spotted Stallone posing for a photo with a fan, he simply couldn’t resist stepping in and stealing the spotlight.

52) A Photo He’ll Never Forget

This guy was thrilled to be visiting the Microsoft offices. He wanted to take a souvenir photo to remember the day, posing in front of this Microsoft sign. His photo became so much better, when the founder of the company and one of the world’s most famous business magnates, Bill Gates, appeared right behind him.

53) Wow!

Saying you got photobombed by a celebrity is one thing, but how about being able to say you got photobombed by the queen herself!? These two tennis players were posing together when Her Majesty Elizabeth II strolled by in the background and smiled at the camera.

54) An Angry Photobomb

This guy took his selfie at just the right moment! If he’d waited just a second later or hit the button a second earlier, he might not have captured this perfect Dwayne ‘The Rock’ Johnson moment.

55) Group Photo!

Can you spot the celebrity in this photo? It’s almost like a Where’s Waldo? moment, with so many people filling the frame. Over on the left hand side, we can see Wiz Khalifa, casually gazing over at the camera without anyone else really seeming to spot him.

These photos remind us that even if celebrities have crazy lives of luxury, they’re still people who love to laugh just like the rest of us. In fact, they’re often responsible for some of the very best photobombs ever seen.

Which was your favorite of these hilarious and unexpected celebrity photobombs?