The Xbox 360 HD-DVD drive is going for $50 on Amazon. Now, HD-DVD has lost to Blu-Ray in the next gen format wars, but that doesn't mean that this drive is useless. It can still play HD-DVD movies which there are quite a few of. It can be used on the Xbox 360, PC and Mac. I kind of want one, but I'm a 360 nut. Here's the link if you're interrested.

Update:

Amazon sold out of their stock just as I was posting this. It is still availible from other sellers.