ok.. Dance_77 you dont know what your talking about alright PS3 plays blu ray disk i actually own one and I doubt you own one. a 360 to play just HD dvds on the 360 you need the HD player which is another $200.00
eYa. The PS3 has a got a blue-ray player built into it and the Xbox360 has a DVD Drive but you can buy an additional HD DVD Player for the 360 ( but now its of no use).
Also someone said that you can attach a blu-ray player to 360 that's completely wrong