I clicked this thread to say Divine Divinity, glad to see others know it exists.

In a somewhat particular order:

Fallout 1 + 2
Planescape: Torment
Arcanum
The Witcher 1 + 2
Baldurs Gate 1 + 2
Betrayal at Krondor
Gothic 2
Arx Fatalis
Anachronox
Stonekeep

In no order:
-Baldur's Gate
-Baldur's Gate 2
-Torment
-Neverwinter Nights
-Arx Fatalis
-Ultima Underworld 1 + 2
- Might and Magic: World of Xeen
-Fallout
-Gothic 2
- The Witcher 2

A cartographer I am not but I admire the hardcore who are. Either I can manage by muddling through lost at times or maybe a given game is just a wee bit too hardcore for me nowadays. I don't mind taking notes though and maybe some simple drawings I guess.

By the way, the suggestions here are so good I wouldn't have anything to add really except that if it hasn't been mentioned and I missed it, I have heard Lands of Lore is excellent for an old RPG.

It's ok for a runaround, but it barely got finished and it shows.. I enjoyed it, but as no more than a distraction, I'd say the same about Wizardry 8 too, and dark Messiah of M & M is fun.

but I really would have a hard time holding any of them up as an example of excellence.

[edit] Oh, misread it.

The Baldur's Gate series
The Icewind Dale series
Might and magic 6-pack
Neverwinter Nights
Ultima VII

I'll suggest something "similar" to those, not the Ultima 7 and Interplay RPGs that everyone else will mention:

Ultima Underworld 1-2, and maybe Arx Fatalis.

If you liked Dungeon Master and Lands of Lore (and why not also Eye of the Beholder series), I always considered Ultima Underworld games as the major evolution of those games. Same idea, but it left behind the square semi-realtime movement. The next generation of Dungeon Master games if you will.

In the same vein, maybe even Might & Magic 6-8 which I enjoyed quite a lot. Not sure about 9 yet, barely played it and I've heard lots of bad things about it.

My preference:

1. Planescape Torment
2. Icewind Dale series
3. Baldur's Gate series
4. Neverwinter Nights

The Witcher
Neverwinter Nights
Fallout 1 and 2

OP has already played it and is asking for other games. ;)

Yeah it was an impoved eye of the beholder game. And it had an automap, but i can be as easy or diffecult how you made it by doing some aras first and then the other one later could make or break your playtrough.