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
