I liked Lord of the Rings Online. Pretty nice community, a lot of great features, and it's been around awhile so there's been a lot of patching/improvements. I hear it's pretty similar to WoW (well, what MMO isn't?), but I found that simply exploring the game world is more fun than in most other MMOs. It's got good classes, cool items, decent crafting, and fun party-level attacks (fellowship combos). Check it out if you're into MMOs.
EDIT: I know community is important, and I wanted to highlight LOTRO's community. In the year or so that I played this game, I never put a single player on "ignore" because they were annoying (except for the random gold spammer). Ever. The players mostly seem concerned with having a good time and completing quests, not running around like assholes yelling about their "phat lewt."