BBC Science Fiction programmes throughout the years

The BBC has just put live a prototype of it's entire catalogue. It's very cool. (Here's the developers blog)

Of course the first thing I did was search forprogrammes classified as science fiction (genre). You get this nice sparkline...

Where the start is 1930 and the end is 2006. Looks like there was a big dip around the year 2000, wonder why.

For each episode it contains loads of details such as broadcast history, contributors, description and so on. Here's the page for the Doctor Who episode Rose as an example. Each page also has an RDF feed so you can subscribe to updates. Awesome.