I could be wrong but I thinly Sly is only one of two actors to get an Oscar nomination for the same character in different films the other being Peter O'Toole

The Dude: And, you know, he's got emotional problems, man.
Walter Sobchak: You mean... beyond pacifism?


Walter Sobchak: This guy f*cking walks. I've never been so sure of anything in my entire life