I'm running four virtual private servers at the moment and paying for all of them with bitcoin. I've also bought the odd meal, coffee etc. with bitcoin but I don't really use it offline.
What are you running on the VPS?
Ah, just realised I read your question wrong. I'm running openvpn, owncloud and postfix servers for friends and family. Also, keeping one as my personal Arch playground / experimentation area.