You might consider picking up a power window motor from a car at a junkyard. Cheap and should be about the right speed for what you want.
Edit: Right, so the question was about powering the motor, not what motor to use.
I liked Slippery Noodle Inn. I was pretty drunk by the time we made it there, but they had a live jazz band playing and it was a good time, from what I remember.
About 3 weeks ago Kroger had 18-packs of PBR on sale for $9.99. I bought one pack of bottles and one of cans (they only had one pack of bottles left). I had three bottles one evening, it didn't go down very well, and I felt terrible the next day. I took the beer back to the store for a refund...
I think this would be the perfect application for an automotive power window motor. Should be about the right rpm, gear reduction with plenty of torque, reliable, and cheap.