Well, it's only a matter of time before the rest tumble. On the bright side for cheapo bastards like me, the coming blowout sales will be spectacular. I'm still going to buy certain titles like Casablanca and Adventures of Robin Hood on HD DVD, as they sold terribly for Warner, and I doubt they're in any hurry to reissue those on Blu Ray any time soon (my guess is 2009, when the user base might support such titles).
As I was saying over on GAF to Mifune, I wouldn't be so hasty to get rid of HD DVDs if I were someone thinking about selling them off. Some of them could be worth quite a bit in a year to collectors, like some laserdiscs were. And HD DVD players are still going to be manufactured and purchased at least through the end of 2008. My advice is to hang on to your HD DVDs and see what happens. Sure, some are going to be worthless, but I'd be willing to bet some are going to shake out at $50 to $75 (or more) on the collector market. Hell, even the doomed D-VHS format from a few years ago has some titles going for $150 to collectors. Point is, collectors are crazy, and you should wait to see if you can take advantage of that.