Is there a way to wirelessly transmit a cable signal from the wall outlet to a TV, while being able to control channels and the like? Basically I've got a TV in a room with no cable outlet. Is there a device I can attach to a wall outlet in another room to transmit, and a companion device attached to a TV that can receive the cable signal? It would be cool if it came with a remote control paired to the TV end that transmits back to the wall end for channels and the like. I've briefly looked at Slingbox, but most of them seem only to transmit to computers and PDAs over wifi, not to TVs.