If you’ve plundered the TED archive to exhaustion, there’s another swollen resource of thought-provoking talks on iTunes. The iTunesU section contains thousands of lectures, demonstrations and recordings from academic institutions around the world.

Imperial College have just launched their own channel (you’ll need to have iTunes installed for the link to work). The top downloads so far contain everything from quantum mechanics to molecular cooking, and are typically 30 to 60 minutes long. I’ll have to add a few to my already bulging schedule of podcasts (I listen to 25 every week).

I’ve not had chance to listen yet, but the university’s suggested highlights include a video of how academics in 1981 imagined the office of the future, and Imperial physicist Dennis Gabor’s 1971 Nobel Prize speech.

Fans of The King’s Speech might also like the 1945 recording of George VI’s address to the college, in which his stutter and pauses are ‘clearly heard’.

Not. Enough. Hours. In. The. Day.