My Comcast DVR learned a new trick: to skip back after fast forwarding. If you're like me, when you watch TV on your DVR you fast forward through the commercials and overshoot the start of your TV show by 10-30 seconds. Well Comcast addressed that with a feature I thought was a bug. After fast forwarding through some commercials I hit Play and the DVR skipped back about 15 seconds. Placing me neatly at the start of my show. At first it was very disorienting. Now it's a Godsend.