The Power of Projection
‘Projection’ they call it. Some actors have it. Most never will. It’s the ability to take a simple line of dialogue and make it sing; have impact; the knack of making a whisper into a shout. All the great Shakespearean actors have it: Olivier, Burton, Dench, Jacobi, O’Toole …
YET … out of the unwashed West emerged several notable thespians who entered the stage via a different door: Hollywood.
Among them was Burt Lancaster …
Watch Burt in this famous clip from The Unforgiven: (1961)
http://www.tcm.com/mediaroom/video/317447/Unforgiven-The-Movie-Clip-How-Much-Woman-Worth-.html 4:59

How many actors could pull that off?
Vera Cruz: Burt Pitches – Coop Catches
Vera Cruz also has some inspired dialogue: ‘one-liners’, verbal sparring, quotes – delivered by two masters: Cooper and Lancaster.
Coop meets Burt:

Clip: http://www.tcm.com/mediaroom/video/274874/Vera-Cruz-Movie-Clip-You-An-American-.html
Coop meets Burt’s Gang: “Follow him boys. We was leaving anyways”
http://www.youtube.com/watch?v=FQ-dIC-0lC8
Burt straightens things out: “Anybody else string with Charlie?”
http://www.youtube.com/watch?v=gemd2Q7Zp9w
Tell me I’m wrong, but damned if that doesn’t look like a very young George Kennedy (uncredited) standing just to Charlie’s right.
Burt sums things up: “Looks like we tied up with the wrong outfit.”