We are planning to brew as much beer as we can for the wedding! Since it's cold in Boston, we have a DIY temperature regulator with an arduino, a heater, and these nifty one-wire temperature sensors. A blog post will come at a later date.
Right now, we're brewing a Belgian Wit beer! You can see the fermenter temperature against the ambient (green) in real-time. I made this plot quickly, so it's not that nice yet.