More use of Eclipse and Mylyn: new book project using Latex
Except for Ruby and Rails (where I use a combination of NetBeans and TextMate) I am switching over just about all of my projects to Eclipse and Mylyn because of Mylyn's task management functionality: if you have not given Mylin a try, please do :-)
I am working on the 3rd edition of my Java AI book and I set up Eclipse with TeXlipse today. Now, I have always liked using TeXShop on my Mac, and I still really like TeXSHop but the ability to have my book code examples and my Latex files in one working environment with Mylin task management makes it well worth the effort to switch setups.