Number one has to be Wrath of Khan. You can't deny the power! It's just too good.
After that, I liked the Undiscovered Country next, probably, but there was something just fun about Voyage Home. It was the humour and character interactions, that made that one. it was almost like hanging out with the crew for a casual weekend when everyone's just dorking around (but happen to have a mission). I enjoy it for what it is. Country had pink Klingon blood, though. Who's idea was that? Probably somebody who thought it would be really funny if these warriors all had pink inside them. Yeah, real funny. Ugh! It's almost as bad as Romulan forehead ridges. Almost. Other than that, I enjoyed the show. Christopher Plummer was great (I almost didn't recognize him the first time) and is one of my favorite Klingons (although Christopher Lloyd has to be one of the favorites from III). And you cannot deny Kim Cattrall as Valeris. Hot!
I guess of the TNG movies I liked First Contact the most. The first one didn't do it for me, and the saggy faced guys didn't work that well. It just seemed like really long episodes. I will say that Nemesis, if it were not a Trek movie, might not have been so bad. But, as a Trek movie it stunk rocks and did it's best to make the Trek universe suck just a little bit more than B&B had been able to push it up until that point (Vampire looking Remans, yeah! That's awesome and makes total sense! I know that folks looking to colonize after leaving a volcanic planet are definitely going to settle on a barren planet and on the side that never, ever gets any sunlight. Yeah, because that's so like the habitat that they are used to. Really, great thinking there! :rolleyes:) Plus, it once again takes an enemy and weakens them. Why? I'm sorry we need to have weak enemy of the episode rather than an ominous ongoing danger. Good call! Let's just have peace between everyone. yeah, that will be fun to watch (which has me worried about the outline for the StarTrek Online game too)