If you haven't seen MyCamTools yet you have got to check it out! For those of you familiar with igoogle, you'll be delighted to see that the folks at Cambridge have a working prototype where igoogle meets Sakai.
AWESOME!!! It's about time Sakai stopped wearing that frumpy dress and put on something a bit sexy. There are sweet little widgets that allow you to quickly add a file or post an announcement to any of your sites without further navigation. Users can pick and choose to make a highly personalized environment.
For those of you interested, there are a few more screen shots and a bunch of information on Confluence. If you happen to be here in Minnesota, definitely take the time to stop one of the guys from Cambridge for an in person demo.