iTunes has a very handy category of content called iTunesU where I found a series of Cognitive Neuroscience lectures by Professor Richard Ivry of UCB, aka University of California at Berkeley.
Not only is the content of the lectures very interesting and useful, but Rich Ivry's delivery is priceless. It's a real incentive to listen back not only for the content, but also to get the nuances of his phrasing and rhythm and choice of words. You can hear one of the lectures with the slides here
I find myself repeating phrases back to see if I can get them just right, which I guess is a handy way of getting students to learn the materials. Or maybe it's just me.