although I love XP, win2k will be my all time fav since it was the first time they combined the stabilty of nt w/ the multimedia capabilities of the win9x kernel.
primary MBP Core i5 2010 | HR | OCZ 120GB SSD
gaming Core i5-2500K @ 4.1GHz w/ CM Hyper212+ | MSI N560GTX-Ti TF II/OC | MSI P67A-GD55 | Silverstone FT02 | X360 250GB + Kinect
htpc IONITX-A-U | 2GB | M350 | XBMC Linux | SABnzbd, sickbeard, couchpotato | NAS Synology DS411J | 4TB
hometheater KURO PDP-5020 | Marantz SR6005 | Definitive BP7001s, CLR3000, BPVXPs