We love watching outtakes from film sets, which often are a collection of actors flubbing their lines and then laughing about it. This happened on the set of The Usual Suspects, during the lineup scene. The laughter wasn't in the script, and in fact the actors were supposed to stand stoically through the scene. But Benicio del Toro kept farting during take after take, and the cast couldn't keep a straight face. So the laughter was included in the scene, which became quite memorable. More often, on set injuries ended up producing genuine fear or anguish, and the footage was deemed the best take on a particular scene, which happened in The Two Towers, Django Unchained, Die Hard, and Tora! Tora! Tora!
Other on-set flubs and accidents were inspirations for an improved scenes in your favorite movies, and Buzzfeed has collected 37 examples that ranged from a purring cat to exploding planes.
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