You can't play most MMO's on a PS3 or Xbox 360 and MMO don't need great graphics so it's really a fairly low handing fruit. Most of them also support digital downloads so lacking a DVD player is not an issue.

Anyway, I have a Mac mini, play WoW, have an HDTV and I would really like it if I could use it to play on my TV.

PS: Targeting the MMO market with overpriced stuff can work. These cost 150$ and seem to be doing well http://www.creative.com/soundblaster/worldofwarcraft/press/w....