Let the hive mind of Engadget get that for you.
"I am looking for a device that will stream sound from one source to several recipients. For example, I want to stream sound from my TV or stereo to my phone or MP3 player that has radio and Bluetooth capabilities. I have looked into radio transmitters and they seem like a decent choice, but I can't find one that uses external power (USB or from the plug) and I would want one with a transmit range of around 50 meters. Thanks!"
Not all shows come into your house even if you are using a cable TV provider. My cable provider doesn't carry any NBC/Universal networks (MSNBC/USA/Bravo, etc) other than the local NBC feed. I have purchased several NBC sister network show seasons in HD from Itunes. Also, I missed Heroes season 2 and recently purchased it in HD so I could watch before I resumed watching season 3 that my DVR was recording.