I signed up for it as well. I currently have a Windows 2000 Server, where I've put my media files. If I get into the beta, it'll be interesting to compare the two-- especially w/re the maintenance required of the 2000 Server OS. Of course most of the maintenance there is due to IIS.
I don't expect it to replace my current server, as it's primarily used for business, but it'll let me move media from the business server to a home server.
PIII 933mHz | 512mb | Win2000 Pro | 40gb | ATI Rage Pro | kWorld DVD xPress | Gigabit Ethernet w/Win2000 Server | 420gb