Software that is awesome with the Wiimote

I was teaching a small group of students the basics of Google Sketchup earlier in the week and (of course) used the Wiimote whiteboard as my key teaching technology. This great piece of 3D graphics software is absolutely perfect when used with an interactive board. My students were designing a new mailbox for the school and the ability to create digital 3D models let them experiment with design features and quickly start refining their initial ideas. Check it out at http://sketchup.google.com/

What's the best Mac alternative to OneNote

Undoubtedly we've found that using Microsoft's OneNote to be a wonderfully natural companion to the wiimote project and our 3pi pen. The search is now on for a Mac version that gives Apple users the same interactivity as our Windows users.
We're wondering if we've found the answer in Circus Ponies Notebook 3. See http://www.circusponies.com/videotour . It can be downloaded for free at http://www.circusponies.com/ . This will give you a 30 day free trial. We're interested to hear from anyone who has used this product. On the face of it looks as though it will do everything that a teacher could want e.g turning your apple computer into a tablet albeit projected onto a screen, whiteboard or wall!