This is one of the coolest competitions yet from Engadget, its a customized X-Box 360 to be exact its a 300 Xbox 360 Elite Edition signed by Frank Miller, and they are also giving away with it 300 HD DVD/DVD. They have 20 of these to give away, and you enter buy just telling them what is your favorite scene and below is what you win:

• 300-Edition Xbox 360 Elite (120GB drive, wireless controller, etc.)
• Console is signed by 300 creator and comic legend Frank Miller, as well as Zack Snyder, director of the eponymous film
• 300 combo DVD / HD DVD to go right along with it.

Link: Engadget