Benjamin Clayborne
Auror
Tales from the Floating Vagabond.
For me, the "best" table-top RPG was the Amber dice-less system. To be honest, it wasn't the system so much as the dice-less aspect of the game. If someone had a better fighting skill than you, then they won... unless you could role-play something to even the odds. And that was the key to it all... we role-played intensely. Without a lot of dice and rules to get in the way, the characters and stories that evolved were rich, detailed, and truly epic.
Granted, you had to game with good role-players whom you trusted, but if you had that... oh baby, you were rockin'!
My friends and I mainly played D&D 2nd Edition but we were very flexable when it came to rules and such. I guess you could say they were more like guidelines. We even found an old copy of 1st Edition Players Handbook and incorperated some of it into our D&D sessions. We played a lot of Greyhawk and Dark Sun w/ a little bit of Forgotten Realms and Ravenloft thrown in. We somehow got around Dragonlance. I think I still have a couple old Dark Sun adventures in my closet.
I also still have my old HeroQuest game w/ some of the expansion sets. I've been pondering if I should attempt to sell it or not. My wife seems to think that our kids may get use out of it some day.