I was watching Full House season 3 and I saw that Barry Van Dyke guest started on the episodeNo ore Mr Dumb guy

Yeah. I've seen this episode several times. He plays a sports guy type that Rebecca (Lori Laughlin) interviews at a party. Jessie (John Stamos) becomes jealous because he's not as educated as Barry's character. That was a good one. Really funny and has a really sweet ending.

Andrea