I don't know if you guys are familiar with Grupa Mocarta but they a polish string ensemble who combine music with mime which makes for very funny scetches. Here are some of the best.
The conductor with a hangover.
The record collector.
Jamming with Bobby McFerrin. This was not rehearsed, McFerrin invited them on stage so he could improvise around what they were doing, they frequently managed to surprise him here.
