Watch John B., Gabe H., Alex D., and Jeff M. on their creation: the KegMate. An iPad-powered beer monitor. Thanks to kegbot.org for their excellent Arduino KegBot firmware.
Check out their engineering blog post for a more technical writeup!
Discussing the iPad Kegenator Software:
The iPad software is the center of KegMate. Under the hood, we built a parser that interprets the input from the Arduino, processes that stream, and gives the important data to the view controllers handling the UI.