It looks like the rumors of a multi-core mobile chip are actually well-founded. Boy, would something like this make for a jaw-dropping future iPhone model that would give us a real need for blocks and GCD.
I'm a programmer, author, and one of the founders of MartianCraft, a software development shop doing both contract and in-house software development.
My iPhone books (both written with Dave Mark) are published by Apress. My first book, Beginning iPhone Development (currently in its 6th edition) is the all-time best-selling book on learning to program the iPhone and iPad.
I also sculpt and take pictures when I need to engage the other side of my brain a little more.