Ah, well, I have an, erm, slightly different view. I was quite looking forward to it (despite the lack of spy thriller/wizard mash-up).
There were some really interesting interviews with authors in the programme, but unfortunately that's the only positive thing I can say about it. I thought the biggest problem was this: Andrew Marr spends an hour explaining what Fantasy is and how the genre works, but he does this by dropping spoilers for dozens of classic Fantasy novels. Now, American Gods was the only one I wasn't already familiar with, but it seems like the programme was designed for pretty much no-one: if you've read all the classics he spoils, the chances are pretty high you already understand what he's about to explain. And if you haven't read them, then in one blow he's ruined some of the best Fantasy fiction ever written by revealing endings and twists.
To be fair, he did at one point say "spoiler", but this was after already delivering spoilers for half a dozen greats, and there was about a nanosecond gap between him saying that and delivering the actual spoiler, so stopping the TV at the point would have been nigh on impossible.
I was imagining some youngster who hadn't yet discovered CS Lewis or Tolkein watching this before reading them, and perhaps never picking up those books because Marr ruined it for them.
Aside from that, I found the general tone to be condescending, with overly simplistic views of what the Fantasy genre is. And the presenter was just irritating: he spoke so fast that at times it was difficult to keep track of what he was saying. There was some nice archive footage and interviews, but overall I found the programme to be incredibly irritating - so much so that I turned off before the end.
Perhaps a lot of that was Marr trying to tell me his rather simplistic view of what Fantasy is, which is something I just don't agree with. Sure, it's Lewis and Tolkein, and the hero's quest. But isn't Fantasy so much more than that? What about contemporary Fantasy that does something different? Does Fantasy have to hold a mirror up to our own world? It felt like he was delivering his own views as gospel, but perhaps I'm being too precious about the whole thing? Or perhaps it's because I thought I might learn something, but instead found him trotting out tired bits of old information - GRRM was influenced by the War of the Roses?
Really? Was Wikipedia the sum of his research?
Sorry, but that was genuinely one of the worst TV programmes I've ever seen