Leonardo DiCaprio slithers behind 50 Cent and Naomi Campbell at a pre-Golden Globes party on Jan. 10.
Instagram.com/50cent
Danny Pino pops into this shot of Alec Baldwin on the set of “Law & Order: SVU” on Feb. 27, 2014.
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Taye Diggs photobombs Jessica Szohr at the ESPYs on July 16, 2014.
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Jane Fonda photobombs pals Carly Simon and Melanie Griffith on Oct. 30, 2013.
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Johnny Depp looks menacing behind Tim Burton on March 22, 2010.
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A sleepy pal photobombs Hayden Panettiere on June 14, 2013.
Instagram.com/haydenpanettiere98
Lea Michele appears not too pleased when her “Glee” co-star Darren Criss photobombs her on Oct. 5, 2014.
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Hunky Josh Duhamel sneaks into wife Fergie’s selfie on Aug. 20, 2013.
Instagram.com/fergie
Joe Jonas’ middle finger makes its way into an otherwise sweet selfie of Kevin and Danielle Jonas on Sept. 12, 2013.
Instagram.com/kevinjonas
Bryant Gumbel creeps up on Hilary Quinlan on Dec. 2, 2014.
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Steven Spielberg, Jessica Seinfeld and Jerry Seinfeld get photobombed by George Clooney on Oct. 3, 2013, making their photo that much more charming and handsome.
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Steve McQueen pops in on Lupita Nyong’o’s selfie with Alfonso Cuarón at the Screen Actors Guild Awards on Jan. 18, 2014.
Instagram.com/lupitanyongo
Kelly Clarkson is very excited to see Portia de Rossi and Ellen DeGeneres at the Grammys on Feb. 10, 2013.
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Ireland Baldwin intended to take a selfie with Kevin Spacey and Nancy Odell at the 2014 Academy Awards, but got more than she bargained for when Jared Leto hopped in.
Instagram.com/irelandbaldwin
Dave Grohl steals the spotlight from now-exes Jessica Simpson and Nick Lachey at the MTV Movie Awards on June 4, 2005.
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Taylor Swift photobombs fellow tall beauties Karlie Kloss and Gigi Hadid on March 1, 2014.
Twitter.com/gigihadid
Kourtney Kardashian photobombs sister Khloe Kardashian on May 22, 2014.
Instagram.com/khloekardashian
No, that’s not the Dark Knight photobombing Kourtney Kardashian and a pal at Kim Kardashian’s wedding … it’s Jaden Smith.
Instagram.com/kimkardashian
In what may be the most beautiful photobomb ever, Gisele and Tom Brady steal some limelight from Anne Hathaway at the Met Gala on May 6, 2013.
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Karlie Kloss makes Alessandra Ambrosio’s selfie even more angelic on Aug. 8, 2014.
Instagram.com/alessandraambrosio
Kris Jenner photobombs Kendra Wilkinson and Kylie Jenner on Sept. 7, 2012.
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Snoop Dogg’s alter ego “Todd” makes a photo of Nia Long and a fan go from sweet to silly on Aug. 28, 2014.
Instagram.com/snoopdogg
Chris Hardwick photobombs “Mythbusters” star Adam Savage on July 9, 2013.
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Goldie Hawn photobombs daughter Kate Hudson on Oct. 17, 2014.
Instagram.com/katehudson
Paul Giamatti sillies up a moment between Sandra Oh and Thomas Haden Church on Jan. 13, 2005.
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Nathan Fillion silently stalks Ellen Page and James Gunn on March 21, 2011.
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Jennifer Lawrence famously photobombs Sarah Jessica Parker at the 2013 Met Gala.
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Cara Delevingne gets goofy behind Sienna Miller at the 2013 Met Gala.
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Steve Doocy and Clayton Morris dance it up while Rita Ora hams it up on “Fox & Friends” on Aug. 19, 2014.
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Anthony Anderson sneaks up on Adrian Grenier at the People’s Choice Awards on Jan. 7.
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Kristen Bell photobombs Adam Sandler, Olivia Munn and Anthony Anderson at the People’s Choice Awards on Jan. 7.
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Josh Kelley photobombs wife Katherine Heigl on Jan. 11 at a Golden Globes afterparty.
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Benedict Cumberbatch sneaks up on U2 at the 2014 Oscars …
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… and it was totally worth it.
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Johnny Knoxville’s jaw drops in the presence of Jessica Alba on April 13, 2014.
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Jamie Chung gets a little too excited on Sept. 5, 2014.
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Daniel Craig and his mustache photobomb Taylor Swift and Lily Aldridge on Oct. 13, 2009.
Twitter.com/taylorswift13
John Mayer photobombs two fans donning tragic matching fedoras on June 30, 2010.
Twitter.com/johnmayer
Bill Murray gives a couple the best engagement photo ever on June 12, 2014.
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Kevin Hart cuts off Taylor Schilling at the Golden Globes on Jan. 11.
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Chris Rock gets an eyeful of Rihanna on Feb. 6, 2008.
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Bruce Springsteen shows Usher who’s the boss in these selfies from Dec. 30, 2012.
Instagram.com/howuseeit