Digital Video Recorder.  I just got one myself through Disk Network. Very nice!  You can pause live tv, AWESOME!!  Rewind, and record hours of shows.  Instant replay is neat watching a game.

The best is pause your show, go do something til 20 minutes later and come back and watch your show in 40 minutes.  Skip commercials, I fast forwarded 6 minutes of them damn things on one show. 

I don't think you could mute those darn idots yelling in the tractor pull though! LOL