In the WWDC07 Leopard Preview, Front Row 2.0 features a DVD Plugin that could potentially work with AppleTV. In Leopard 9A466, all the frameworks are there (BackRow, IPhotoAccess) and it should work on the ATV. If anyone has an AppleTV with USB support and a (relatively) portable dvd drive, would you be willing to test this?

Also, I would assume it would require DVD Player v5 (in 9A466).

If someone wants to do this, I'll PM the files to you.

I got the newest version of the leopard beta last night actually, 9A499, i'll give it a shot and post what happens, I'm having trouble getting regular OS X to work on my ATV though so dont expect an answer so soon