I've used
Beer Captured and
Clone Brews but after listening to Jamil's podcasts and incorporating his tips and fermentation techniques I think its time to buy his book and give his recipes a shot. I
mean, JZ did brew all 80 BJCP styles and has won the most awards of any homebrewer. Of course I won't be able to blame any off-flavors on the recipes any more...

I think
www.thebrewingnetwork.com has the book signed and bundled with Palmer's
How to Brew and purchasing them directly from the source sends more money to Jamil and John. But then the books cost more than on Amazon. I guess its more rewarding than making a donation to some other do-good cause (at least in my beer-warped brain.)
My current Saison recipe came from
Clone Brews although I didn't follow their generic fermentation advice. Good overall recipe though.
Radical Brewing has some unique recipes as well. The Dark Night Tangerine Porter looks good.