My server runs Redhat, my wife's pda runs cacko (zaurus distro), my router runs dd-wrt which is also linux. I have occasionally ran linux on my desktops and hope to add a larger hard-drive to my laptop to dual boot either Ubuntu or Kubuntu. Unfortunately, many applications I use (Live6, SoundForge, Adobe CS3, some Cad/Cam stuff) have no comparable linux replacement, so even if I dual boot in the future, all my 'work' will be done in XP. I've played around with Ubuntu on virtual machines too.