Peckinpah's films- from Ride The High Country through Cross of Iron.
Mann's Thief, Heat.
Most of Warren Oates's output from 1969- his death.
Much of Eastwood's work 1964- 76. Plus Unforgiven.
George Romero's first 3 Dead films.
Fulci's 70's - 1980 horror output.
Any film based on the "Parker" series of books by Westlake(Richard Stark)- Point Plank, The Outfit, Payback, etc....
Many of the films based on Elmore Leonard's work have the same appeal.
Leone's Eastwood films, Once Upon a Time In The West, and Once Upon a Time In America.
The Friends of Eddie Coyle.
Rolling Thunder.
Quick and The Dead.
The French Connection.
Charley Verrick.
John Wayne's 69- 76 output.
Mcqueen's The Getaway, Bullitt, and Pappillon, and Mag. 7.
Takeshi Kitano's Japanese gangster films.
John Woo's 80's-90's Hong Kong output and Hard Target.
Bloodsport
North Dallas 40
Any Given Sunday
Mean Streets
Taxi Driver
Porky's I II
RoTN I II
Much of Burt Reynold's 70's- 81 output.
The Killers and the Reagan remake.
Resevior Dogs
Full Metal Jacket
A decent amount of Bronson's work.