Just  posted a Screencast of John at Soul Solutions on building a Windows Sidebar Gadget.  The gadget is based off the slideshow gadget from Vista. 15 Queensland Cameras are hardcoded in Javascript. By default the slideshow will fade between the cameras every ten seconds but the navigation controls allow manual control to move forward or backward and pause.

..If you are thinking of building a gadget this is not to be missed!

http://channel9.msdn.com/Showpost.aspx?postid=317275