I'm learning Clojure and figured it'd be neat to just record Minecraft in-game events to Mixpanel and see what the data looks like. I'm only logging a few events right now, and only have data from me playing around on my test server, but the data works really well with Mixpanel's segmentation feature.
The code for my plugin is here, if anybody is interested: https://github.com/ryancole/com.rycole.bukkit.eventlog