Titan Books has given The Sci-Fi Block two -- count 'em, 2 -- copies of their new Firefly companion book, Firefly: Still Flying, which features not only behind-the-scenes stories, prop information, character photos, episode storyboard art, and ship concept designs, but also three Firefly short stories (you can read our full review of the book here). The book hits stores Tuesday, May 25, and will likely stand as the definitive Firefly companion.