The grand daughters want a new game system for Christmas. I'm pretty much video game brain dead. I want to make sure that the one I get can play HD or Blue Ray movies. From what I have read the PS3 is good for Blue Ray but all I see about the XBOX 360 is that it can do HD graphics. Does anyone know if the "HD graphics" include HD DVD's? Added info: I just talked to my son and he is big on making this decission based on the movie playback quality of the unit. PS3 - built in Blue Ray while X Box looks like you can buy a Microsoft HD DVD player that attaches to the game system (so why not just buy a seperate HD DVD player).