A friend got one and it seems Boing-Boing is right, Livescribe Pulse Smartpen: It's a Keeper. It's a great idea that lets you keep track of story ideas or even generate information & training videos, and seems to open up all kinds of possibilities when combined with other new and future tech. Here's a bit how it works:
Here's an example "pencast:"
Stars Wars notes brought to you by Livescribe