Self healing NTFS, now that scary, read more here:
http://blogs.technet.com/b/doxley/archive/2008/10/29/self-healing-ntfs.aspx
Also Windows Server 2008 R2 SP1 still in beta
http://www.serverwatch.com/daily_news/article.php/407390/Microsoft-Server-2008-R2-SP1-Features-Dynamic-Memory.htm
http://technet.microsoft.com/en-us/evalcenter/ff183870.aspx