I haven't seen all of these movies but they look good! *= I've seen the movie ~ = looks really good
You can find these movies either on Netflix or muchmovies.org
The Family* Essex Boys~
The Godfather I, II, and III* Hitman's Run~
Goodfellas* Corrupted Minds
The Great Gatsby* The Krays
FBI's 10 Most Wanted * Outlaw Country~
Mafia~ The Gangster~
Inside the Mafia~ Perrier's Bounty
Marrying the Mafia I, II, and III A Very British Gangster
Mafioso~ I Went Down
The Mafia, The Salesman~ Street People~
Mob Sister Donnie Brasco~
Escape from Alcatraz~ Lock, Stock, and 2 Smoking Barrels
The Untouchables Carlito's Way~
Brooklyn Rules~ Gangs of New York
Wannabes Road to Perdition
At the Sinatra Club Miller's Crossing
American Hustle~
A Brooklyn State of Mind~
Money Kings~
Capone~
Cop Land
In Too Deep
Hell up in Harlem~
Stand up Guys
Safe
Interview with a Hitman~
Harlem Nights*
The Iceman~
King of New York~
State Property
Percentage
Caged Animal
American Me~
Colors
Joy Road
King of Paper Chasin'
Gang Tapes
The American~
The Street King~
Things to do in Denver when you're Dead
Hoffa~
Chicago Overcoat~
Flipping
Borough of Kings
Ginostra~
Gunshy
The Killing Kind
Strictly Sinatra
In Bruges
American Brawler
The Crew
Bounded by Blood