Hell, I have close to 100% uptime here (my net dropped out for about five minutes yesterday but before that I'd been connected for two weeks and my computer is always on) except my upload speed is slow and I'm Australian, so everyone else would be lagging pretty hard.
If one day I started renting a root server I'd probably be running a Minecraft server on it. Or two - open world server with absolutely no rules, and an enforced themed-build/RP server - along with a webserver which I'd hook up to give some info on the servers as well as hosting my other worthless crap.