If it's just the first... only if you're willing to coop through it. It's a lot of D&D 3e combat, and not much else. The writing is bad, even by Bioware standards.
The expansion packs for the first game are all pretty decent. The first two, are decent romps, the first is low level, while the second is an epic level romp. The third "expansion" is kinda meh, it's a bunch of small, but good, adventures, usually a couple hours each.
Finally, the best part of the original game is the player created content. I think the NWN Vault is still up, and has an absurd amount of this. It ranges from terrible fan fiction quality, to stuff that eclipses, the original game and both expansions.
Now... if that pack includes NWN2, things get interesting...
NWN2 updates to 3.5, it drags a bit once you get to act 3, but it has some really funny and memorable characters. The first expansion nearly hits Planescape Torment levels of quality, though it also boasts some painfully difficult combat, even for D&D veterans. Finally Storm of the Zehir is kinda... meh. It's not bad, but it is a very unstructured game in contrast to, well, everything else in the franchise, with a large overworld map, and freedom to wander around at will, as well as rolling up your entire party, rather than just the PC.
Both games are worth playing, but for vastly different reasons.
