Modernist Cuisine: WANT!
As a molecular biology major, chemistry minor, and general molecular gastronomy food geek, this is just about the coolest food book ever. Of course it's pretty expensive ($625 list, $467 on Amazon), but compare this to the price of five high-level science or engineering textbooks. It's in the same ballpark.
I'd love to get my hands on this just for the excuse to break out the chemistry equipment!
Check out the blog for recipes.