OneNote 2010 is a great product. I have been using OneNote daily for a couple years now. It has become my default repository for important information.
– Tasks lists
– Design before I build software solutions for work
– Meeting notes
– Class notes

The great thing about OneNote is that it is a three dimensional space (notebooks, sections, pages) instead of a one dimensional space in a product like MS Word. Also, you spend much less time worry about formatting details, and more time getting your ideas and thoughts recorded.

OneNote is almost an extension of my brain. Now with OneNote online, I use one note to plan with friends and family. I like the rich client with offline synchronization which makes OneNote a more productive experience than Google Docs. I am on the road and often have a slow internet connection, so with offline sync, a slow connection doesn’t slow me down.