Toward the end of my college career I fell in love with my LiveScribe. You might hear an aside in a lecture about X, and you could simply write X in your notebook. Later on, you could search your notes for X, and if you were wondering what exactly was said about X, you can tap on that note to hear what was happening in the lecture at that point in time.<p>Later on, Y might be brought up in relation to X. Write Y in the notebook, and draw a line to X, and so on.<p>I am not much of a note taker nowadays, but I highly recommend trying out the LiveScribe. I am considering buying a new one just to see how things have progressed.