JeffB
Legend
Glorantha. Imo, it's the best fantasy rpg world evar. It's rich, creative, weird and shows tremendous scholarship in the field of mythology.
Actually, everything by Chaosium, and Greg Stafford in particular, is pretty much awesome.
I'll agree with that- all of it.
The original RQ "campaign packs" like Pavis, Griffin Mountain, Borderlands, Questworld & Big Rubble are THE standard IMO for campaign setting material regardless of game system.
And of course there are the "other" masterpieces like CoC, Stormbringer, Thieves World..even Superworld & Elfquest were done exceedingly well.