Ooo. That's a good one. Drives me bananas. Worse when that format is used in those documentaries where they are looking for some long lost treasure or some holly grail. A bull documentary with no conclusion. I sit there thinking why am I watching this crap.Also: American documentaries of the kind found on the freeview channels. They must cater for a viewing audience with the lowest attention span or information retention ability possible. They are about 15 mins content and 45 mins repetition. I dont need to hear a 10 min recap of what you just told me right before the adverts!