Lost still really makes me annoyed with how that show ended. Fantastic, thrilling ride that had me hooked throughout. But then when it got down to the last four episodes, I thought to myself, "There's no way they're going to tie everything up with only four episodes left!" And I was right. Very disappointing, as there was so much story and build up concerning the island and all these characters lives. Could I recommend to others that they watch this series? I'm not sure. Like I said, some fantastic story telling in there, but it was like that old joke about how mad fans would have been if Star Trek the Next Generation would have ended with Riker waking up in the real world only to realize it had all been a dream...
Speaking of Star Trek: TNG, yeah - All Good Things was a very satisfying ending for me. But since there were more TNG movies, I guess it really didn't end I suppose. Although, Nemesis was NOT a good movie send off for The Next Generation Crew. I still wish there could be a proper movie ending for TNG.
Babylon 5 had a good ending, but then it continued with Crusade. And Crusade was cancelled, so I guess it didn't have such a good ending after all. But if you liked Bab 5, I'd recommend checking out Crusade too. I liked it.
Psych - enjoyed this show. Fun ride throughout with a lot of geeky references and such, and a pretty decent ending too, which left me happy. If you haven't checked out Psych, this show comes highly recommended. Perfect for a lot of people in the 30-40 age bracket, or those who wish they would have grown up in the '80s and '90s.