Pretty Woman
Julie Roberts truly became a star once she starred in Pretty Woman with Richard Gere. No need to rehash the plot of this classic film, but maybe you forgot the scene where Edward (Gere) gifts Vivian (Roberts) with a necklace. At first, when he is presenting it to her, Vivian reaches out but then Edward just shuts the box really fast. Well, the actor Richard Gere actually did this as a bit of a prank on his costar. Roberts loved the way it turned out and thought his little improvised move was hilarious!

Pretty Woman
Forrest Gump
Yet another movie that’s classic and oh so quotable! There’s probably too many memorable scenes for you to guess which moment was improvised. Well, it’s the scene where Forrest Gump (Tom Hanks) meets Bubba (Mykelti Williamson). On the spot, Tom Hanks just said, “My name is Forrest Gump. People call me Forrest Gump.” Sure enough, the director, Robert Zemeckis, loved this stroke of genius and kept it in the film.

Forrest Gump