My collection:

Angels With Dirty Faces
Billy Bathgate
Bronx Tale, A
Casino
Gangster Wars
Godfather
Godfather Part II
Godfather Part III
Godfather Complete Epic
Godfather Saga
Godfather Trilogy
Goodfellas
Gotti
Hoodlum
Little Caesar
On the Waterfront
Once Upon a Time in America
Petrified Forest
Public Enemy
Road to Perdition, The
Roaring Twenties, The
Scarface (1932)
Scarface (1983)
Sopranos, The (all seasons)
This Thing of Ours
Untouchables, The
White Heat

+ numerous documentaries.