Strangely, since reading this thread, I started playing NWN again. Like Lehesu I never really liked it much. I found it generally bland, unchallenging and soulless[1].

However, I'm now playing a couple of mods from the ign Hall of Fame - the Shadowlords (soloing it) and CC1-Myth Drannor (with my son) - and they're really rather good. CC1 seems amazingly polished for an amateur production - its maps are rather beautiful and the combat seems very well pitched in terms of challenge. Shadowlords is working up to an epic story in the BG mold and even throwing in a rather sweet romance. I'd recommend trying them both - afterall, you can't quibble about the price.

[1]Although Charwood area in Chapter 2 of the OC and the Witch's Wake module by Bioware are up there as among the best experiences CRPGs can offer. Shadows of Undrentide was also fun - Deekin the kobold bard is hard to beat as a recruitable NPC.