Well.... they do show "Do de rubba Duck" in the current season...
I mean, I can kind of see why he's not on in reruns anymore. I mean, the character is pretty much a send up of 70's (and early early 80's) Game show hosts (i.e. Monty Hall) and Game shows don't really have the same effect they used to back then (it's all that reality crap). Not happy about it either, but that's my assumption.
And we won't see him in new skits, as they haven't recast Guy yet, and I think they never will, as a tribute to Jim. With that said, David Rudman supposedly was recast to play Sonny Friendly.... if they ever do any future Game Show parodies, I hope they don't over look him.