Famous Movie Lines That Were Actually Improvised
Being John Malkovich
The film Being John Malkovich had a ridiculous premise that helped it to ultimately attain cult classic status.
Director Spike Jonze liked the energy and humor of one particular scene that definitely wasn’t captured in the way it was planned.

Being John Malkovich
In the scene, a car of drunken extras drive by and are supposed to heckle Malkovich. Instead, the passenger decided to yell, “Hey, Malkovich! Think fast!” and hurl a beer can at the actor.