It is very Linear. However the story is amazing. The Eye Candy, Blood splatter, and Some Adult themed homour makes it a win for me. Don't get me wrong, It's no Oblivion at all.
NWN2 I'm abit dissapointed with personaly, I like the story line with M&M alot more. Galactic Civilizations 2 just rocks. I'll have to check out the ST mod. I'd love to get my hands on Dual Procc. just to really dig in deeper with GC2.
Anyway, With Bethesda doing Fallout 3, and given the success of Oblivion, I can hardly wait. at first, I didn't care for the idea of a fallout being 1st person, but after seeing what they can do, I take back any doubts.
Stephen