Casablanca
Speaking of classic movies, you had to guess Casablanca might end up on our list. You remember that line, “Here’s looking at you, kid.” That was never part of the film’s original script. However, actor Humphrey Bogart often said that to his costar, Ingrid Bergman while they played poker on set in-between takes. Those writers sure knew an outstanding line when they heard one!

Casablanca
Titanic
Now to the James Cameron hit, Titanic. The very first scene they began filming was the one where Jack (Leonardo DiCaprio) draws a nude Rose (Kate Winslet). Wow, must have been an intense start to their filming! Anyway, it was Leo who messed up his line and made a mistake that Cameron ended up loving. Maybe you forgot but he said, “Go lie on the bed…I mean the couch.” He was just supposed to tell her to go lie on the couch.

Titanic