In the world of theatre, the word as written by the writer is respected above all else, leading to such theatrical masterpieces as Hamlet, Antigone, and The Chuckle Brothers Summer Roadshow.
Sadly, the same cannot be said for the world of movies, where writers are routinely steamrolled by dictatorial directors, pokey producers and hammy actors *shakes fist in general Hollywood direction*.
However, when it comes to these iconic movies, it's just as well the actors went off script. Here are the 11 greatest lines of all time that nearly didn't make the cut.
Related: The Weirdest Movie Poster Expressions