One of the shows that didn't record this year was "Sarah Connors Chronicles". It was set to record all shows at all times. The way the PVR missed it, is a first (never seen the PVR act this way before): Sarah Connors was at 8:00pm (normal airing time) but the PVR decided it was at 9:00pm. So it didn't record at 8:00pm, and when 9:00pm came, the PVR didn't record because hte show running wasn't Sarah Connors Chronicles.
Lucky me, I was home that night checking what the PVR was doing. Usually, I lose a lot more shows.
I also had another recording that recorded a show everynight at 7:30. It recorded Wednesday but forgot the other days... Go figure!