I never got to watch Groucho Marx as a kid, too "adult" for my grandparents to let it appear on the television (70s and early 80s).

On the note of the old-school comedians, Red Skelton came through Manhattan KS in 1990 when I was in college and I managed to get tickets. He had a sign language interpreter on stage with him and some of the punchlines were her translated hand gestures. Good stuff at several levels.