John Cazale vs James Dean

[dead0man]

Cazale made The Godfather, The Godfather 2, Dog Day Afternoon, The Deer Hunter and The Conversation

Dean made East of Eden, Rebel Without a Cause and Giant

both died way too soon, Cazale from lung cancer, Dean from a Ford pulling out in front of him.

[Mr. Smith]

The one with lots of genuinely good performances (who we oughta remember was, in fact, smart) not the one that inspired The Room.