Mathematics of Poker and what else?

[DMoogle]

I'm thinking about buying Mathematics of Poker (reviews?), and probably another book as well. But I have no idea what else I should have to add to my poker library.

I play $5/$10 NLHE online, FWIW. I also occasionally play MTTs, but I suck at them. Here is what I currently have:

The Poker Player's Bible (lol, first poker book though)
Internet Texas Hold 'em
Ace on the River
Caro's Book of Poker Tells
Super System I
Small Stakes Hold 'em
Poker Wisdom of a Champion
Bobby Baldwin's Winning Poker Secrets
Theory of Poker
Inside the Poker Mind
The Professor, the Banker, and the Suicide King
Harrington of Hold 'em I
Harrington of Hold 'em II
No-Limit Hold 'em: Theory and Practice
Professional No-Limit Hold 'em

So... what else?