Amazon is offering a great deal on the Xbox 360 HD-DVD add-on drive for your Xbox 360. When you buy the drive, they'll ship a King Kong HD-DVD and 2 others of your choice for free for a price of $179.99. Once you receive the shipment, you mail in a rebate form with your choice of 5 other HD-DVD discs that they will ship to you for free. The drive alone costs around $180, so you are basically saving around $200 (8 x $25 / disc) on the movies.
According to the AVS Forum thread, you can actually get another disc for free (totalling 9) by selecting Super Saver Shipping to get 4 movies for the price of 3.
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Remember, this HD-DVD USB drive can be
hooked up to your PC