Eli Wallach
I had the fortune of watching both this movie and The Good, the Bad, and the Ugly within days of each other. Eli Wallach immediately became one of my favourite actors, causing me to watch any movie I knew he was in. These included some real shabs like The Horse Thief (with Yul Brenner), and some roles that were not much more than cameos, like The Man in the Vat of Oil character he played in Circle of Iron. Leon B. Little ranks right up among his best and most iconic, in my opinion.
"When you have to shoot, shoot, don't talk."