Nice build. I'm doing almost the same thing with a "D2 Plug" from Globalscale and an old Visio LCD TV.

http://www.globalscaletechnologies.com/p-53-d2-plug.aspx

I'd love to use a cheaper Pi but so far I've only been able to get my hands on one so I don't want to permanently tie it up putting stuff on a TV screen.

Its a little disheartening that all these months later, the most impressive part of most Pi projects is still sourcing the damn thing in the first place.