This uses the Minecraft query protocol (the same one they use in the official Minecraft client) to get the usernames from the server and display them similar to how we show who's currently on the TF2 servers.
http://quigley.coded.io/ville/
I don't have a way of including it on the front page, but maybe some day.

And, as before, here's the code: https://gist.github.com/belak/94821f129b077a755686
serverlist.css and serverlist.js are both copied from the Ville and included there for completeness.
Also as before, please let me know if you have any comments or questions. Enjoy!