Agile Web Development with Rails. I'm up to Chapter 11 or so, if I remember right. Took a break to solve some puzzles for something completely unrelated. Hopefully I can get back to a chapter a night.

After that, I'll probably crack open the Flex 3 Cookbook that Mike Potter sent over. I still feel awful about not having read through that one yet, as Flex 4 is almost ready to be released.