While I'm handing out praise (see my blurb on Ubuntu below), I should say that I find Microsoft OneNote, part of Office 2007 to be a really useful piece of software. It is like a collection of notebooks that you create that house pages, each page is a big blank canvas that you can click on anywhere and make a note and it saves it automatically for you. You can click on each of these little notes and modify them, delete them, flag them, and so on.
You can also send information from other Office apps right to OneNote, meaning you can click on an email and send to OneNote, and then start adding information to the original email.
OneNote also gives you the ability to trap screenshots from any application and drag them as notes into any page.
Also cool is the automatic backups, the ability to password-protect sections, and to publish pages as PDF or XPS. It integrates with SharePoint, and you can create shared notebooks that all people have access to.
It's well done, and after I took a few minutes to read the documentation and try it out I found the interface to be, maybe not quite intuitive, but certainly easy to understand. I like it a lot and I'm happy that they've brought something like this out.
