My dad saw him when he was in college, (mid-1950s), I saw him when I was in college, (late '70s), and if I'd had kids they could have seen him when they were in college in recent years. I've always considered that one of the amazing facts of my life. Hell, I thought it was amazing that he was still performing w/ such energy when I saw him ~30 years ago.
A true original if there ever was, he will be missed.