Tootsie
When you have Bill Murray and Dustin in a film together, it was pretty much guaranteed to be successful. In the movie, Murray portrayed Jeff the roommate.

Tootsie
The director was aware of Murray’s knack for improvisation and that was how they came up with the party monologue. It was amazing but hey, this is Bill Murray we are talking about.
The Third Man
We all know that Orson Welles is a cinematic genius. However, you would be surprised to hear that he has turned to improvisation several times in the past. The fact that he actually came up with this great line there and then is nothing short of amazing: “In Italy for 30 years under the Borgias, they had warfare, terror, murder, bloodshed.

The Third Man
They produced Michelangelo, Leonardo da Vinci, and the Renaissance. In Switzerland, they had brotherly love, five hundred years of democracy and peace. And what did they produce? The cuckoo clock.”