Think he couldn't act?

Walter Brennan was perhaps the prototypical character actor. Even when he was a younger man he was portraying crusty types that seemed to be a lot older than they were. My generation remembers him as Grandpa Amos on The Real McCoys television show.

But could he really act? I guess so! He won three Oscars for Best Supporting Actor (the most by anyone so far), and was nominated another time.