Blogcast: The Exchange team start to demo!
As Michael pointed out in his blog, the Exchange team have created lots of blogcasts, 5-10 minute demos of Exchange. Lots of stuff about Upgrading from 5.5 to 2003, Fighting spam, and Disaster recovery.
They're certainly worth bookmarking if you ever need to configure the IMF or something similar, and like Michael, they've saved me a job...
There are quite a few blogcasts now - just see whats out there!