World of WarCraft: The Burning Crusade

The Good
Role playing, fantasy, player versus player, individual play. Love the classes you can play and the attributes they have. The Druid class was especially fun because it can be a hybrid class of Priest/Warrior/Rogue. Hunters seem weak if you don't have a fast mouse and area to run and move. A bit steep in the beginning to learn but once you get the hang of it, the game consumes you!

The Bad
Getting ganked (killed) by higher level players in contested areas. High level instances still requires particular grouping of classes and decent skills of other players to participate. Also the instances can take some time to complete. Too bad it doesn't have voice application integrated and some groups require you use ventrilo.

The Bottom Line
If you like developing your character (leveling and getting items) and you like fantasy related games with real humans playing other characters and interacting with you then it is pretty fun.