This was bound to happen sooner or later. A member of the Doom9 DVD conversion forums has just released his first build of "BackupHDDVD", a tool used to decrypt AACS copy protection (found on HD-DVD based movie discs). Just goes to show, no matter how supposedly strong the protection is, it's gonna be cracked eventually.

There is a catch with this however, the program is not able to grab the cryptographic key which is first needed to be able to decrypt the actual movie, you are required to add your own keys once you've determined what they are. Apparently the key is encrypted on the movie disc which when played becomes decrypted somehow, as for being able to obtain that decrypted key for use with BackupHDDVD is anyone's guess just now.

We've written up a dedicated article covering it in full detail, and there's more feedback on it over at the Doom9 forums folks.