I wonder if it might be time to invest in a $200 sling box device that transmits your home entertainment system to your PC over the internet?
As discussed in the overpriced movie thread, using the TV out on your laptop to the room TV should work. Certainly a hassle but just might be worth it for heavy travelers.
Anybody ever see or use a sling box?
http://www.slingmedia.com/go/slingbox