Dream Movie Cast?

[jabbercash]

So basically if you were to make an assemble film and could get any actors you wanted, who would your dream cast be? Feel free to include any actor dead or alive, and if you want you can choose which decade you'd want them from.
So if I could get a perfect cast, it'd probably be for a 50's gangster movie. I'd love to see these guys in an assemble film:

Robert De Niro (70's)
Tom Hanks (80's)
Jack Nicholson (any decade)
Leonardo Di Caprio
Clint Eastwood (60's Clint Eastwood in a Gangster Film, imagine that!)
Sean Connery (Don't care what decade it's friggin Sean Connery)
Steve Buscemi (90's)
Bruce Willis (80's)
Kevin Spacey (Dunno where he'd fit in here but I'd find some place for him)

So yeah that's my dream cast, what would your guy's dream cast be?