It’s shameless, I know… but these are some books I want to read:

Ajax: The Definitive Guide
Algorithms in a Nutshell
AppleScript in a Nutshell
bash Cookbook
Building Cocoa Applications: A Step by Step Guide
Cocoa in a Nutshell
iOS 4 Programming Cookbook
iPhone App Development: The Missing Manual
iPhone Game Development
JavaScript Cookbook
JavaScript Patterns
jQuery Cookbook
Linux iptables Pocket Reference
Programming iOS 4 – Early Release
Programming the iPhone User Experience
PThreads Programming
Regular Expressions Cookbook
Secure Programming Cookbook for C and C++
Securing Ajax Applications
XML in a Nutshell, Third Edition

They are all available at: http://oreilly.com/store/publisher/oreillycomplete.html