Famous Movie Lines That Were Actually Improvised
Willy Wonka and the Chocolate Factory
Sometimes, a director is absolutely adamant about which actor or actress should play a given role.
This was the case when Mel Stuart signed on to direct Willy Wonka and the Chocolate Factory, as he insisted upon Gene Wilder playing the title role.

Willy Wonka and the Chocolate Factory
In his unforgettable (and unscripted) entrance, Wilder has Willy Wonka limp toward the camera before breaking into a somersault, showing that you can’t believe everything you see when Wonka’s involved.