The Livescribe pen is one of Popular Mechanic Magazine's Top 10 Best Gadgets of 2008. Here is the website for the device. The introductory video on the main page is a little lame. I would suggest you look at the videos they have deeper in the website.
My thinking is that Mary might find this useful in her classes. But I'm wondering whether this might be a great way to capture my client conferences without having the laptop there.