Not biased, are ya??? j/k. Seriously, I've heard good things about these books. Also, Jiu Jitsu Unleashed by Eddie Bravo usually gets alot of votes when people ask about books. I think Amazon.com has it for like $13.
Theres one by Rodrigo Gracie called No Holds Barred tips and techniques i think I'm going to pick it up next time I see it.
JJ Unleashed is the best BJJ book on the market, IMO. For mma, I really think you can not do better than Bas' Big Books.