Is David in season 9 at all besides the last two episodes? I was looking at the episode guide on nickatnite.com, and it said that he was only in the last two. But I remember seeing an episode a long time ago before I really watched the show where David and Darlene (who was obviously pregnant) were sitting on the couch, but it wasn't the last episode. I might be remembering it wrong, but I don't know...

I know he was in the episode where Darlene gives birth. I'm almost positive he was in a few others, but it's been a while since I've seen the show.

nick@nite just ripped off the tvtome episode guide.. which isnt all correct.
David is indeed in quite a few season 9 episodes.