Tonight the documentary is about the Permian Extinction, which I have read up on a bit, because I think it's really interesting. But, I'm torn because at the same time it's the last episode of Spooks, which hasn't been available to preview on BBC3, and I don't think I should miss it.
Meanwhile at exactly the same time, Taggart is on ITV. Three at once. Then there'll probably be nothing else I want to watch all week.