Eli Wallach was one of the best character actors ever. TGTBTU and "The Magnificent Seven" would not be the same films without him.
A few memorable lines ....
"If you're going to shoot - shoot. Don't talk."
"Anyone who thinks that knows nothing about Tuco."
"There are two kinds of people my friend - those who do the cutting, and those with ropes around their necks."
"There are two kinds of people, my friend - those with guns and those with shovels."
"Blondie! Blondie! Blooooondie ....".