One of the things that bugs me about some people in the technology field is that they do not perform enough occupational maintenance. Today I just purchased Agile Coaching and Beginning Mac Programming: Develop with Objective-C and Cocoa. Both from the Pragmatic Bookshelf.
If you have not done so already, do yourself a favor and go to the Pragmatic Bookstore, check yo self, and get better at what you do! Here is my bookshelf to date.