Less than a week before the rumored introduction of movie downloads to iTunes, Apple has been beaten to the punch by Amazon and its new movie download service dubbed Unbox. Unbox allows users to buy or rent movies and TV shows. Movies cost between $7.99 and $14.99 to buy and $3.99 to rent, while TV shows are $1.99 a pop. For those prices, users can store their downloads on up to two PCs and download an extra version optimized for handhelds, which can also be stored on up to two devices. Amazon’s selection includes movies from studios such as Universal, Sony, and Warner Bros., as well as TV shows from networks like CBS, Comedy Central, Fox, and MTV. Amazon isn’t competing directly in Apple’s territory, though, because Unbox uses the Windows Media Video format and runs on Windows XP only.