Self-Contained Scenes

Are there scenes in movies that you think on there own could be a short film of sorts? Ofcourse the opening adventures of Indiana Jones or James Bond fall into this category, but any others?

For me, two scenes from the Coen Bros. A Serious Man stand out: first, the opening sequence spoken entirely in Yiddish, and secondly (as well as my favorite part of the film) the Goy's Teeth story... (the embedding has been disable on both, so just follow the links)

Opening:
http://www.youtube.com/watch?v=2bWlzQLLVlA

The Goy's Teeth
http://www.youtube.com/watch?v=YUTyEEiulQk

A lot of the Marx Brothers skits could. LIke the tootsie frootsie ice cream scheme from "A Day at the Races", or the stater room skit from "A night at the Opera" could both easily stand on their own as great comedy short films.

But most of my other favorites need that build up and character development to make their scenes so great. LIke the ending scene in "Mr. Smith goes to Washington" or the scene in "Casablanca" where Ilsa pulls a gun on Rick. Or the boo radley scene in "To Kill a Mockingbird" all of those great moments of film needed character development before hand in order to be considered so great and triumphant. LIke the scene where Gunga Din warns the british of the thugee attack in "Gunga Din".