Around the blogosphere I’ve noticed various people pointing out that the ten Darwin’s Legacy lectures from Stanford Continuing Studies are available via YouTube. (See Videos from Darwin’s Legacy course at Standford « The Dispersal of Darwin and ’10 Lectures on Darwin’s Legacy’ by Stanford University – RichardDawkins.net)
But they’re also available for iTunes (as part of the iTunesU section), so I might have a bash at downloading a few to watch on the train. Link here.