Richie Aprile (The Sopranos)
Tony Soprano (The Sopranos)
Furio Giunta (The Sopranos)
fukk it... 99% of The Sopranos cast is on this list.
Rico (Paid In Full)
Travis Bickle (Taxi Driver)
Carlito Brigante (Carlito's Way)
Tony Montana (Scarface)
Sosa (Scarface)
Jimmy Conway (Goodfellas)
Diego Delgado (Blow)
Alonzo Harris (Training Day)
Michael Corleone (The Godfather)
Stringer Bell (The Wire)
Neil McCauley (Heat)
and last but not least I can't forget the biggest Gangster ass dude in the history of TV...
Larry David (Curb Your Enthusiasm)