@deadheat @LukeAlmighty probably my favourite piece of dialogue from that game (or maybe any game) happens after you invade the troll lair and defeat the king.
Troll king: “why did you humans come here and start killing us? What have we done to you?”
My character (chaotic neutral): “I don’t know, it just happened this way”
The game is full of neat things like this. There are entire quests available for specific alignments, some companions will or will not like you and try to leave. Or maybe they’ll kill another one of your companions (there’s an evil elf in my party who murdered my cleric because he was a pussy). Not to mention the shenanigans like that goblin quest from NWN that you mentioned.
P.S. you can even have a goblin in your party. Can’t romance him though, unlike some other characters.
Neverwinter Nights is one of those early 2000s games, when RPGs began the transition into full 3d. Earlier games featured pre-rendered or sometimes even hand-drawn backgrounds and characters, which allowed for much higher details. There's only so much power you can squeeze from a Pentium 3 with 128 megs of ram.
Here's two screenshots. One from Icewind Dale II, the other one is from Neverwinter Nights Enhanced Edition. The latter was only updated to work on the modern hardware, no HD textures or models were added as far as I know. Both games were initially released in 2002.
Icewind Dale II still looks so much better due to all the details. Such a shame there won't be an enhanced version of it. As far as I know, the original devs lost the source code. But you can still buy the old version on GOG.