Fallouts were great (I didn't see anyone mention the other part of Fallout 2 with the people coming out of the vault and their welcoming committee...
)
Torment was probably my favorite. Even better, was one of it's demos.. I think the one that came with BG1. I've actually searched through my Interplay collection just to watch that demo before!
Other nice ones.. Deus Ex: IW (can't remember the first one.. I'll have to check it out again), Crusader: No Remorse