Well, other than a few days over the past month and a half, Blue-Ray sales have been kicking HD-DVD's arse in every category.

http://www.eproductwars.com/dvd/

BUT, it looks like both format sales are pretty dissappointing, overall. There's a chance that they'll both fail to ever become mainstream...

Also, here's a good source of information if you're really interested:

http://www.highdefdigest.com/tags/show/Disc_Sales

I'm doing my part, though. I've got 10 Blue-Ray movies, so far. Probably will pick up Rocky this weekend to make it 11.

Also important to note, is Sony has just released their cheapest Blue-Ray player. I know, it's still got a ways to go before it's as cheap as the $250 Toshiba HD-DVD, but a $500 stand-alone Blue-Ray player is a step in the right direction for the format. Plus, the PS3 will have a price cut this Fall as Sony's getting their blue-ray parts cheaper, now. I'd be surprised if there isn't a sub-$300 Blue-Ray player on the market this Christmas.