Well... NWN was fun and all. But it is hardly how I would define an RPG.
Have you ever played games like Baldur's Gate, Fallout, Icewind Dale, KoTOR or VTM: Bloodlines? Those are the GOOD RPGs.
On that note, NWN2 will bloody rock! Take a look at some of the material regarding NWN2. It's like NWN1 times 100. That's like... NWN 100.
Coincidentally, Baldur's Gate 1 and 2 and KoTOR were done by the people who did NWN (Bioware). KoTOR 2 was done by the people who did IceWind Dale and Fallout 2 (Black Isle, now Obsidianent), and are doing NWN2, and who helped Bioware with Baldur's Gate 1 and 2. Further, VTM: Bloodlines was done by a portion of the team who did Fallout 1 (this team was called Interplay and the derivative was called Troika, but both of these teams have gone bankrupt), with another portion of this team becoming members of Black Isle, then Obsidianent.
What am I saying? I'm saying you should go buy and play those games!