There are already plenty of reason why you wouldn't own a TV, especially if you stream to your iDevice regularly. The Epson MegaPlex MG-850HD projector lets you give your iPad the big screen treatment in your living room.
The projector, complete with iDevice dock, has two 10-watt speakers buried in its backside, and its 3LCD system pumps out 720p video at a bright 2800 lumens. While you could feasibly buy a decent TV and an Apple TV for Airplay streaming with what you're paying for this thing, the projector thankfully rounds things out with plenty of ports for HDMI and component/composite cables. Nice. $800.