I’m aware that there is no such thing as a free lunch, but you have to give huge credit to Apple for somehow making a deal with some major universities to get the audio recording from various courses into iTunes and for free. I just downloaded a few courses and have to say that it’s a little awkward that it’s just the audio (you don’t know what’s being written on the chalkboard, you don’t have the course syllabus, and you don’t have the course books), but having access to the audio is pretty darn cool.