All depends on what your wanna spend and if you wanna play. the ps3 going to be divx certified:
http://www.ehomeupgrade.com/entry/44..._technology_to
Xbox360 you can get the HDdvd add on drive (separate) but you can also connect to your computer.
You can always get a low cost computer.
I have a HDHR and watch HD over my 100M network. No problems.