I did a quick (20 minute) video introducing the features of ConfigMgr 2007 R3.
This video contains no audio, instead I use slides to pass on information and to break up the video in to sections covering each of the features.
ConfigMgr 2007 R3 from Rob on Vimeo.
I short change you by not showing you the features such as Client Status Reporting and Forefront Security integration, as well as avoiding Power Management (I had no Power data to show you the reports). I didn't cover the R3 installation log (located in the %TEMP% directory), I don't show you the power management logging on the client, but pretty much everything else is in there.
If you've not seen R3, just read about it, curious how it installs and shows up in the console, what you can do with it then check out this video as I cover all of this and more off.