A good photobomb can make a nice photo even better. But when celebrities get into the game, it has that extra bit of hilarity.
Whether they are popping up behind costars or friends, a lot of celebrities enjoy worming their way into photos from movie premieres to award ceremonies.
Take a look at some of the funniest ones below:
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Oscar Isaac snuck up behind Adam Driver and pretended to punch him in the back.
Benedict Cumberbatch jumped up behind U2 and some others at the Academy Awards in 2014.
Jared Leto loves to photobomb. Here he is behind Anne Hathaway at the 2014 Vanity Fair Oscar Party.