Macbeth
First Post
Books that are fun to read are always my favorites. Good rules are just a bonus. 
Anyways, let me list some of my favorite reads:
Paranoia XP - This book makes me laugh. Hard. It's the only RPG book that's made me laugh out loud while reading it.
Paranoia XP Traitor's Manual - Commie humor never gets old, comrade.
In Nomine - I'm a sucker for angels in a modern setting, and now I'm working on a d20 game with the same idea, without stepping on In Nomine's toes.
Beyond Countless Doorways - Just too much good stuff
Hamunapatra - Great, great flavor. The races chapter just struck me as being really, really well done. Added a lot to the core races.
Skull and Bones - Again, just a great feel. Take the real world, add some magic, and you've got S&B.
Spellslinger - Does a good job of making the wild west magical, and has a decent amount of flavor without going too deep into it. Only thing holding this book back is the short length.

Anyways, let me list some of my favorite reads:
Paranoia XP - This book makes me laugh. Hard. It's the only RPG book that's made me laugh out loud while reading it.
Paranoia XP Traitor's Manual - Commie humor never gets old, comrade.
In Nomine - I'm a sucker for angels in a modern setting, and now I'm working on a d20 game with the same idea, without stepping on In Nomine's toes.
Beyond Countless Doorways - Just too much good stuff
Hamunapatra - Great, great flavor. The races chapter just struck me as being really, really well done. Added a lot to the core races.
Skull and Bones - Again, just a great feel. Take the real world, add some magic, and you've got S&B.
Spellslinger - Does a good job of making the wild west magical, and has a decent amount of flavor without going too deep into it. Only thing holding this book back is the short length.