Feelgood, great list! Those are all my top picks. I think we have similar sensibilities about this.
My list would be, in order:
Morrowind + expansions
Fallout 2
Gothic 2 (you can also get the german expansion "Night of the Raven" with a fanmade english subtitle patch and it's great, but I only recommend it to hardcore gamers because it makes the game waaaay more difficult)
Fallout 1
Gothic 1
Wizardry 8
Wizardry 8 is good, but only if you're pretty hardcore. The rest of the games listed though are all fantastic for any gamer with an advanced capacity to appreciate excellent games (which can require more patience, admiration of game world lore and interactivity, and versatile character building, etc over flashy graphics and instant gratification [Fable treads this line, and is good, but falls short of being great like the games in my list]).
Feelgood, do you know of any other similar games of the caliber of those I listed? I played Vampire Masquerade Bloodlines and thought it was kind of mediocre. If you know of any other great games similar to these, I'd love to know about them.