 In the "Seinfeld" episode ("The Old Man"), for which Erwin received an Emmy nomination for outstanding guest actor in a comedy series, he played Sid Fields, who participates in the Foster-A-Grandpa Program, which pairs him with Jerry Seinfeld.Erwin's crotchety, aggressive, foul-mouthed character ensures that the relationship is doomed from the beginning.Erwin later reunited with Michael Richards when he guest-starred on the short-lived "The Michael Richards Show".