burlmart - Your comments on using a laptop w/TV tuner are exactly my thoughts. It would work fine for portability, but all the wires are a real pain. I've thought about purchasing a port replicator (what frequently is called a docking station). Then setting up that docking station where one would likely watch TV or movies the most. You could then lace or arrange the cabling more to your liking and then merely dock the laptop when needed. Here is one source
Priority Electronics. A port replicator, for those not familiar, is a device where all of the external ports on a laptop are brought to a common device. You can then plug in external monitors, keyboards, mice, speakers, printers, charger, high speed or dial up etc. to this port replicator and the laptop merely docks to the replicator. Very useful for home use and then taking the laptop on a trip.