Social PVRs from PARC

"Indeed, in many ways, Social TV will be similar to the Instant Messenger you already use on your computer. Only it will be more dynamic: Social TV software, located on a device like TiVo or even your TV set, might notice that your and your buddy’s yacking has gone well past the commercial break. The software would conclude that you are no longer watching the show and, perhaps, pause the program until you are ready to resume, says Nic Ducheneaut, member of PARC research staff."