There was The Sky At Night episode about it a month or so ago, great stuff.
As a general recommendation, Sky Ay Night is worth checking out, you can watch it on BBC site if you can, well, convince them you're in the UK (khm*VPN*khm). It's the longest continually running programme in the world (began in 1957!), and each month it brings the latest news from the world of cosmology, along with explanations, stories, interviews with scientists and a regular "what's up?" (in the sky) segment. I watch it with my kid regularly.