51st Greatest American Film

Conversation regarding 'The Philadelphia Story' carried on from Billboard Bulletins:

Okay Joe, much more suitable forum for what can possibly be a lengthy discussion...

So, what would you list as your Greatest Films, American or otherwise...

I must admit that I certainly have different expectations of American films than I do of others, and will often dismiss a film not from America as being 'Too American'.

I must admit my list of Greatest films would probably include 'Seven Samurai' (or maybe even 'Yojimbo' or 'Rashomon')

So: question to people give us your top three (to make it easier) on the followinglists:

Greatest Films
Best Films
Most Favourite Films

(And yes, if you think about it, they should all be three different lists...)