I just discovered Slingbox today when a friend told me about it - basically it is a box that will code video signals and broadcast them over the internet to your PC wherever you are. So, you could have a cable box back in Texas connected to this thing (which is connected to your router), and you could watch the broadcast (and change channels) on your PC from any place where you have a high speed internet connection. It even supports TiVo.
My wife's folks have pretty much all the infrastructure at their house to run this thing, so I'm thinking about getting it.
The friend that I was talking to has one connected to a cable box back in NY and watches it here (via Netvigator). Anyone else here doing this? It seems like it would be worth the $250.