I'm planning on signing up for NaNoWrimo's National Novel Writing Month, where you write an entire novel in the month of November. The cool thing is, if you finish it by the end of the month, they send you a proof copy of your book.
I'm still kind of deciding what idea I'm going to use for my book, but so far, I'm leaning towards an idea for a story that I came up with a while back, originally called "The Vegas Spy." I'll probably post updates on how the book is going during November.
I already have the basic idea of what the book is about, so right now I'm just trying to tie up the loose ends.