"5 steps forward - 1 step backward" - Excellent phrase for what I was looking for the other day. The History channel "How the Earth Was Made" is exactly this. Whilst it is a very good show, it pains me to keep seeing repeated clips, recaps of something I just that second watched and the worse "coming up next". I think it is as a result of the breaks in broadcast and people tuning in mid-show. They should edit them out when producing a DVD.
I fancy the idea of this show, but if it contains the above then I will give it a miss