I just think it's cool that if you type in "biochemistry" into the iTunesU search box, you get this link on the top of the first page.
At least, it works that way on my computer. Feel free to listen in. I've changed quite a bit of the "entropy" lecture this year, for example, thanks to my R.J.P. Williams research.
(And, yes, one of my lectures is named after a They Might Be Giants song. I'm hoping people searching for that song will also see my podcast, what can I say?)