I have been doing a lot of research of IIS7 recently.  There are a TON of webcasts and material available.  As I run across them, I'll add them to my IIS tag.

Managing IIS 7 with Windows PowerShell
http://channel9.msdn.com/Showpost.aspx?postid=256994

"The IIS Show" by Brett Hill  (This has several shows on IIS)  It is worth checking out.
http://channel9.msdn.com/shows/IIS_Show