The Management Packs for Windows 2008 has finally been released!
Another winner of the System Center Contest is Jaime Correia who submitted the file system Management Pack.
Tim McFadden has written a great GUI based tool so you can easily schedule maintenance mode for a server or group of servers!
I just installed Opsmgr @ one of my clients. Using a default setup. One opsmgr server and one SQL 2005 server.