It is worth having.
If the backup feature works as advertised.
(boink your PC restore it from server OS... kudos...)
Play with it..
Since you have it anyway.
It is slow and never add drives that have data on them to it. the rest might be okay.
Seriously, set it up go to every sick site you can think off, get viruses. (I know hard to do as a smart surfer) . See if it can fix it. (dont think viruses are smart enough to work on windows home OS, restore points definitely but Windows home server can restore from cold steel. dunno if it can do it from PXE boot.. or USB stick or whatever. It can image an OS though from network.)
EDIT: you know what PXE boot is? Try that too and let us know. That means a whole new world for us benchers
EDIT:
http://social.microsoft.com/Forums/e...d-992a27042535