Some people just seem to make a career out of playing old people, and thus seem to live forever; remember the still-kicking Angela Lansbury playing Laurence Harvey's mother in The Manchurian Candidate 48 years ago? (even though she was only 3 years his senior?!)
Erwin is probably best remembered for his guest-starring spot on Seinfeld, as old man Sid Fields, Jerry's elder charge who ends up biting Kramer in a misunderstanding over his record album collection (remember those?) He continued to turn up on TV for more than another decade, a relic nearly of the Edwardian age who would always make me both laugh and marvel: he's still alive?!
In this 1993 clip, Erwin, who died last week at 96, was a mere lad of 79 -- and became part of the sitcom's extended cast of characters who will live on in syndication for a long time to come.