We got several comps, I'll go in order of OS coolness.
Free BSD web, mail, ftp, nfs, DNS, X servers,
Free BSD firewall.
NT4 server PDC, local fileserver, vpn, backup gateway, mail, dns.
NT4 wksttn my comp; runs mainly 3d apps and nonlin vid editing on G400 dualhead, 2x pII 550e@700/256 ecc...