Well, I gotta go with, despite some very fine RPG's there on the list, something of a different vein.
FALLOUT (and FALLOUT 2)!!! The most awesome-est rpgs I ever played. Huge story, lots of interaction, lol, the ability to go into a town and just kill all the men women and children if you want to try, and yet still be able to win the game. And the character creation was quite nice and innovative, and gave huge flexibilty. But most of all the levelling up with perks was great. I had a melee character, who got to (my mind is shaky, so don't flame me if I get the details wrong) some huge level, and got a Slayer perk. Which meant that every melee attack he made was a critical hit.
Anyways...yes, I know Hero Quest. It was a pretty nice half-way RPG half-way board game. But the main reason I remember it is because of another game..Heros Quest!
One of the earliest computer games I ever played, Hero's Quest I: So You Want To Be A Hero (released by Sierra) was a fricken awesome game(in the style of Space Quest etc, except with stats and abilities and stuff) (at least for my developing ten year old brain) and I only learnt how to kill Baba Yaga the Witch like, when I was fifteen. Sierra also Re-Released the game, and changed the title, so that it wouldn't be confused with Hero Quest the board game, to Quest For Glory, gave it 256 Colour VGA graphics, and COMPLETELY ****ED IT UP! Without actually changing anything.
They switched it from a text input like typing what you wanted, to a GUI. Your actions were reduced to about five or six things. It sucked.
Anyways Magus (and all), if you're really interested in that old board game, here's where you can get the computer version.
http://www.the-underdogs.org/game.php?gameid=504
or you can just read about it. wow, that's big for a quick reply...