For today only the Acer Aspire Revo costs £150 with free shipping, grab it at Acer Aspire Revo Desktop PC - Desktops at Ebuyer
I want one to replace my modded Xbox at some point, it looks like the price has gone up as I remember this been £150 a couple of weeks ago. Great price either way.
I hope a media player will be released for jtagged 360's soon, if not the acer option is looking even more appealing as a way to play hd mkv's on the telly in my room.
It's certainly a capable platform for such a thing. My DCGF-Somethingorother, one of the early atom boards, only has a dual core atom and the shoddy intel integrated and it can handle 720p quite well, that's in Windows XP with XBMC, should format it over to Linux really. But really, if I had the money for an acer aspire revo, I'd be looking for any excuse to get one, a tiny machine that can play HD media and a good selection of games? Exciting.