The Lightscribe Smart Pen is a advancement in the common ball point pen. Think of it as a pen with built-in voice recorder & tagging. When you write, it records what is spoken at the time and links it to your written notes. Confused?
Just check out the video at http://www.livescribe.com/ Well worth a look.
Right now it's Windows only and requires special paper. As for future Mac capatablility, according to the manufacturer...
*Note to Mac??? users: We are actively developing a native Mac solution. Please note that our product is not currently compatible with Parallels or VMWare. We are working hard to resolve both of these issues, and will post more details and timing as soon as possible.