Black Isle and BioWare have both made a number of excellent RPG's (Fallout 1 and 2, Baldur's Gate I and II, NWN 1 and 2, Star Wars: Knights of the Old Republic, Planescape Torment, and so on).
Fallout Tactics is a quite challenging game, which I recommend trying even though it doesn't nearly offer the same amount of freedom and storyline depth as Fallout 2. In fact, I would say that you need to have played through Fallout 2 before trying the former. Fallout Tactics has a challenging real-time combat system which relies a lot on planning and formation to win the more difficult battles.
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram
^.^ Oh yes, i have. I need to raise up like 300 bucks to upgrade by pc in order to play it though -.- grr. I'm not looking for an mmorpg. My personal computer doesn't have internet; I have to use my crappy family pc.