I rarely watch tv these days, having little patience for advertising, so when a series happens along that interests me I tend to go for the dvd. In this case, I saw a trailer on the internet and the price for the set was actually less than renting the discs, so I went for it. I have a fascination with things underground, so I was eager to see the hidden treasures this had to offer. But while I was not at all disappointed with the subject matter, I have to say there was a lot about the programme which was disappointing. The two seasons in this set cover a lot of territory, from the more well known (Hitler's bunker) to the seriously obscure (the subterranean world of pagan Turkey), and manage to fit in quite a few surprises. But the style of the show lets it down. Obviously it was made to fit the requirements of television, each episode split into ten-minute chunks to allow for advert breaks, and each segment starting with a precis of the past one. This makes it seem choppy and repetitive when viewed on dvd without advert breaks. The direction and camerawork also favour a lot of rapid jumps, peculiar angles and rapid movement, which adds to the jerky, disjointed feel of the show. And the narration is often over-simplistic and patronising. The extras were actually much more enjoyable viewing, since they told a story smoothly and without excess of stylistic tricks. I don't regret buying this, since I had over 17 hours of viewing, much of it giving me a fascinating glimpse of our subterranean past, but I think it's a pity that the director allowed the ADD generation to dictate the presentation of material which deserved a much more leisurely approach.