#15: The Shawshank Redemption (1994)
Everything in movies seems to be perfectly timed and effortless, but the truth is, behind almost every scene, there could be hundreds of takes. There’s one scene in The Shawshank Redemption where Andy visits the library and has to wait for his cue to speak, followed by a squawk from Brooks’s crow.

Since crows can’t be trained to squawk on command, actor Tim Robbins had to learn the crow’s squawking pattern so he could perfectly time his line according to that.