The old dead Lizardment site Temple Pyramid Vault used to have spectacular fluff pieces in the days of 5th and 6th ed. They lost most of their old posts when they converted to the Temple Pyramid Vault 2. Now that is dead as well. Their stories were truly great. I really liked "A Hero to Lead them" and am upset I never got to read the conclusion.
This is a little newer than the forum I'm thinking of. I bet there is good pieces in there and our own fluff section is pretty bare. When I have some spare time on holiday break I may look over their stories and make an index thread to the ones I think are esepcially good.