you like gangster films, huh CC? my top four gangster films, in no order, are:

miller's crossing (1990) -- directed by the coen brothers and starring gabriel byrne (keaton from The Usual Suspects)
the big heat (1953) -- starring glenn ford and directed by fritz lang, legendary german director
white heat (1949) -- starring james cagney
angels with dirty faces (1938) -- starring james cagney and humphrey bogart

anyway, my top 15 favorite movies of all-time are:

the graduate (1967)
taxi driver (1976)
2001: a space odyssey (1968)
the good, the bad, and the ugly (1966)
requiem for a dream (2000)
the man who wasn't there (2001)
forrest gump (1994)
american beauty (1999)
casablanca (1942)
pulp fiction (1994)
sunset blvd (1950)
ace in the hole (1951)
ben-hur (1959)
silence of the lambs (1991)
memento (2000)