I'll start with two Bobs
Bob Newhart (age 91)
Bob Barker (age 97)
Norman Lear was just 1 year younger than I am now when "All in the Family" premiered in 1970. He's still alive, and will be 99 in July.
These guys always seemed old to me, even when I was a kid, so it's surprising to see them around when I'm almost 50.