In no particular order, and I can't trim it down to ten. I don't think I can assign a "best", or a "favorite".
Dr. Strangelove
Patton
Band of Brothers
We Were Soldiers
The Great Escape
A Guy Named Joe
The Longest Day
Twelve O'Clock High
The Dirty Harry Series
The Lethal Weapon Series
The Magnificent Seven
The Green Beret
Field of Dreams
Saving Private Ryan
Bullit
Space Cowboys
The Enemy Below
The James Bond Series
Scrooged
A Christmas Carol/Scrooge (two versions, Alistair Sim and George C. Scott)
Grand Prix
Marlowe (James Garner version)
McQ
Ben Hur
Tombstone
Hour of the Gun
Payback (Mel Gibson)
Kelly's Heroes
The Dirty Dozen (and sequels that weren't as good as the original)
The Battle of the Bulge
Command Decision
The Professionals (Lee Marvin)
Wanted Dead or Alive (Rutger Hauer)
The Indiana Jones Series
Blade Runner
The Original Star Wars Trilogy
American Grafitti
Two Lane Blacktop
The Vanishing Point
Deliverance
Smokey and the Bandit
The Cowboy Way
Where Eagles Dare
At least 95% of the movies with eithe/and/or, John Wayne, Carry Grant, Steve McQueen , James Garner, Clint Eastwood, and Robert Mitchum.