Zolgar: Planescape.
Unlike BG is doesn't kill you before you can ever start the game. :p
strixo: Actually, PS:T kills you quite early in the game...
yeah, but it's not a "game over" kinda kill.
Can't count how many times I started playing BG, and got killed within 5 minutes.
D&D 2E rules suck for video games. Actually no wait, D&D rules suck for video games, period. D&D is NOT meant to be a video game. In Planescape they realized this and VASTLY modified the system.
Personally, I never got too terribly far in BG or PS:T. PS:T was due to the games story just never grabbing me and making me go "I want to play this." Mechanically it was fine though, and these days I could probably get in to it (I plan to buy it again eventually). BG on the other hand, the story never interested me, and I disliked a lot of the mechanical elements of it as well, paired with dying more often than I have in any RPG.. I gave up on it.
There's only 1 thing I can give BG over PS:T: You have a bit more control over who/what your character is. That, however, is rather superficial. You can put a different skin on them, but for the game they're the same.