So you've been bitten by the touch-screen bug, unlike us, and want a combo PC-TV as well? And nothing less than a 70-inch LCD will do? My, what demanding Cravers we are.
Then feast your greedy eyes on this all-in-one beast from GPNC Korea, which supports full HDTV and has wireless Internet access--just switch from TV to PC by way of the remote. It also includes a wireless keyboard that's dwarfed by the size of this monstrous screen (check out the photo from PClaunches for a comparison).
Alas, we have no information on price or availability, but that's probably a good thing because there's no way we could afford it. In the meantime, however, you can commence drooling.