I started a book back in March and submitted a book proposal in June. I just got back feedback from a reviewer and the publisher and it was very positive and they want me to press forward. Unfortunately, not as interesting as Sideon's stories, but it'd be cool to be published even if it is a technical, geeky book. Then I'd literally become "the man that wrote the book" in my area of specialty.
The scary thing is that I actually need to get on a solid writing schedule because it's going to be a fairly long book.