Encouraged by some co-workers, I've signed up for NaNoWriMo 2005, wherein I will attempt to write a 50,000-word novel during the month of November. I failed at this twice before: in 2002, I banged out less than 9,000 words before losing steam, and in 2003, I didn't manage to write one word.
This time, I'm using a premise I scribbled down several years ago and never developed, but every time I read my notes, I get excited. The working title is By the Light of the Moon. It'll be my first attempt at historical fiction, and I expect to get many things wrong. I'm also crossing hard-ish sf with pure fantasy, which will be interesting.
I'd still like to finish the novel I started in 2002 (Star-Cross'd, which I describe as "Romeo and Juliet in space" or "Contact meets The West Wing"), and flesh out the short story "Working Graves", which really cries out to be the first novel in a bestselling series. (Hey, I can dream, can't I?) But NaNoWriMo encourages participants to start new works of fiction-- outlines are okay, but no actual prose until November 1st.
As the FAQ says: "Give yourself the gift of a clean slate, and you'll tap into realms of imagination and intuition that are out-of-reach when working on pre-existing manuscripts."