I've spent the better part of the last 4 months looking into what the open source communities have been up to. The .NET stack was great to work with for 2.5 years, but I always find I get a thrill out of working with new things.
My books collection has been growing, particularly with PragProg titles. In the last 4 months I've read:
* Seven Languages in Seven Weeks - Bruce Tate
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* HTML5 and CSS3 - Brian Hogan
* Programming Ruby 1.9 (1.9.2 update) - Dave Thomas
* The Rails 3 Way - Obie Fernandez