Its a great game, wont spoil anything. But bring a healer with you at all times! Dont rely on potions to heal. I did in my first playthrough and got stuck =(
I can also recommend Mass Effect 2, its also a great CRPG. Played thruogh it 5 times =)
But best CRPG is in my memory Star Wars: Knights of the old republic 1&2
Second place goes to Planscape: Torment
I miss the old pen&paper days..even though they where at times like this:
[youtube:2yx099ak][/youtube:2yx099ak]