Everyone's favorite gadget website, Gizmodo, has posted some interesting info on the Xbox 360's HD DVD drive. Apparantly, it can be plugged into a PC and will be recognized as an optical drive.
Some things I found out, and can talk about is the 360 HD-DVD drive can be plugged into a PC and it will be recognized as an optical drive, but will not play HD-DVD movies. I asked what if you have the proper HD-DVD software on the PC, to that [redacted] said that he didn't know, it hadn't been tried yet- maybe there's something there...
I'm guessing the inability to play HD-DVD movies is due to the lack of software. If it is possible, I know I'll be first in line to pick up one of those drives. With a price tag of only $199, they're a cheap way to add HD-DVD playback to an HTPC. If you'd like to read more, the entire report can be found here.