The 25 Greatest Improvised Film Lines [VIDEO]

I found this video on YouTube. I can't say definitively that they are the 25 greatest improved lines because I don't know all of the improved lines in film. But these are some of the most iconic lines in film history. Many of which I never knew were scripted. The cool thing about this video is the creator also includes info about the scene and what lines were the actual improv. Check it out here.