BaR2-D2 serves 'em up!
BaR2-D2 has been unleashed on the masses with sound activated lighting, a removable drawer for mixers, a turntable that rotates beers in to position, and a six-bottle shot dispenser. Apparently, these ARE the droids you're looking for.
Next up, a robot urinal, C3PeeO.
You can download the instructions on how to build this for free! Time and materials are on you though. You can see a video of it in action here.
BaR2-D2 on Instructables