Good List of mods here. I've been testing them and there are some gems. I recommend installing them and you will end up with a bg2eee (extra enhanced edition) :)
The item randomizer lets you turn the game into Diablo, (think random loot)
Some of the others make everything more challenging like real D&D so you have to think more, faster and be more careful in places where you thought you knew everything. Still others add lots of new quests and content.
The character ones I've enjoyed so far are Yasraena who is like the only good Drow npc you have ever gotten to play with, Branwen who lets you make fun of the game a lot, the evil Hexxat is interesting, Neera and Rasaad are kind of weak physically but have lots of character, and I'm going to try Angelo and Dorn soon.
The link is here: http://forum.baldursgate.com/discussion/23726/bgii-ee-compatible-mod-list/p1