One of the more innovative RPG's on the market, the Amber Diceless RPG is a system based around Zelazney's Amber Chronicles, both the 'Corwin' and 'Merlin' series.
I have a page that centers around both my (now completed) game, A Tale of Blades and hints for Amber GM's. If you're interested in perhaps playing the game tabletop, I'd love it if you'd take a look. Alternatively, our quotes are pretty funny.
In addition, there are (that I know of) two Amber themed MU*'s out there, PatternfallMUSH and AmberMUSH, both of which use some variation of the DRPG rules. I'm not active on either, but here they are...