I always liked the idea of a completely evil party. THough sadly ... and thats what I criticise BG2 for is that the choice of "evil" characters is somewhat limited. YOu have like 4 in totall if you count the player as well. I think Viconia (which is an awesome NPCs by the way, pretty complex), the Wizard (which name I forgot) and Korgan Blodaxe of which many say has some of the funniest dialogues in the game. You can get Sarevok as well. But ... then you have to play with 5 people till you get to ToB. Which is possible. But probably not that easy for unexperienced players.