Yep! One of our friends on Steam (who runs the Lunar Republic TF2 EQD server) has graciously set us up a Minecraft server, complete with locations from the show! I recorded a quick video showing off the server's basic features, which you can find after the break.
The server is here: mc.simplybrony.org:12787
A note about my video: I have the pony mod installed, which is the only way that you're going to see ponies in the game. Google for the mod, or you'll get only humans. And that's no fun.
Check the break for the video!