Have you looked at LiveScribe? (Score 2)

We considered this for our son in college (he wasn't interested), and if I were attending lectures, I'd sure get one of these! The pen records audio as you take notes. Later, tap on the page somwhere and the pen plays back what the instructor was saying at the precise time you were writing at that spot on the page. Can also download the audio to your computer, and does many other things too. Check it out at www.livescribe.com.