Those of you who drink the kool-aid, or do only on your employers time, might be interested to see the New Features in Windows Server 2008. Self-healing NTFS, Address space randomization, SMB2 filesystem (reason for this I heard on one of the TWIT podcasts was "to f*ck with Samba"), virtualization (oooh! that could be interesting) and Server core, a GUI-less system (hows that going to work I wonder.... hey, Microsoft is stealing all Linux's ideas! where's the innovation!?!?).
Like I said, an interesting read to see what's around the corner. The interesting question for the Linux camp is a) does linux have equivalents to these features and b) does it need them?