There are demo's out for BG and BGII, so you can try the games yourself. You should be able to find them at Actiontrip, expect pretty big downloads though.

About Planescape Torment: I remember buying that game when it first came out after reading a rave review in PC Gamer. I never got out of the first (?) city, I didn't even complete the first quest. After playing it for a while I just quit and never started it again. I remember thinking that if I just wanted to read stuff I would have gotten a book.

About KOTOR: no shop seems to carry the original one these days. I really want to try it after all the praise it's gotten here, and I'm hesitant to try KOTORII before playing the first one. However it seems like I should hurry and buy KOTORII before it is sold out too