There is a demo of the Microsoft Education Pack for Tablet PC online at Channel 9. [Thanks to Scoble for the link] This package includes an equation editor, an organizer, a game, a flash card creator and a connection to One Note. If you are a (or know) a math teacher or anyone else who needs to add equations to documents like tests and homework sheets the equation editor alone is worth the price of the software. Or would be even if the software wasn't free. The flash card creater also looks interesting. I can see teachers in lower grades creating flash cards for their students. At all grades I can see students using this software to help them study.
You can download the Microsoft Education Pack for Tablet PC here. I've been saying for two years now that if my son was going to school today I'd send him with a Tablet PC and MS Office with One Note. This latest add-on is one more reason I think that a Tablet PC is the laptop of choice for students.