I am a huge proponent of home integration; however, some of it is just not needed. If the screen had an inventory of what was in the fridge and could let you know when things were running low, now that would be useful. Being able to play your TV on the small screen on the fridge with probably really crappy audio, not so much.
Seriously, if someone was buying that crap I think they would have enough money to have a flat panel mounted on the wall with a small htpc networked with a home server.