Rowan

Watching this clip of Groucho on the Cavett show, Groucho stops the proceedings to tell Dan Rowan he is one of the greatest straight men who ever lived.  "I watch you and I marvel at the equanimity and style and class."

Wait, what?  Really?

Well...yeah, maybe.  I guess this is the sort of thing Groucho was talking about.  Martin gets all the laughs, but the bit is all Rowan.

My favorite Rowan and Martin moment was when they roasted Rickles with his own material, simultaneously celebrating his genius and exposing him as a fraud.  Rowan got the biggest laugh, when he couldn't find the punchline.