Ever want to do writing recognition on the Internet? Julia Lerman wrote an article for MSDN article that demonstrates how you can use InkPresenter in the .Net framework with Silverlight. The interesting thing with the InkPresenter is you don't need a Tablet PC to use it. Plus you can use the built in handwriting recognition to get back what you write!
If you want a demo of her amazing application, you can play with the demo over at her blog.