The sling catcher has one end that is Ethernet and goes into the wall and another that has different standard outputs that goes into your TV. It then can either hook up with a networked computer, a flash drive/hard drive or another slingbox either on the network or remotely.

The example on the Sling Media's Web site is for a college student who still wants to get the local sports teams while he is at school. He can buy a sling catcher and a tv for his dorm room and bum his parents TV from the slingbox at his house back home.

I think this is exactly what you are looking for.