I have one and use the laptop to view the TV shows when I'm away and can't view the tube. It's mostly NFL games or stuff I have TIVO'd. It even works on my Treo 700w.
I love it. Very easy to setup and as long as you have a decent connection, it's worth it. Of course, if you go full screen, it will look pixellated, but I keep mine in a small window and it's beautiful. No regrets.