I was subscribed to the kegbot mailing lists, but I haven't received anything in probably a year, so I'm guessing not much gets posted there anymore.
I used to have a barcode scanner hooked up to my kegerator. It would tally up your drinks for the day and you could even graph your drinkers over a week, month, or year. It was fun to look at the tallies after a party to see how much everyone drank.
But since switching my kegerator to a two tap homebrew setup, I haven't tweaked the software to work with 2 taps instead of just one. I never thought about adding a camera. That'd be pretty cool to snap a picture every time a pint was pulled.