This demonstration of an intereactive surface for VJing is excellent. The purpose of this interface is as said by Stuart Taylor on his vimeo page. "VPlay is an interactive multi-touch surface designed to open up the practice of VJing, encouraging new creative dialogues to be formed between VJs and members of the audience." http://vimeo.com/2738692
VPlay: An Interactive Surface for VJing from Stuart Taylor on Vimeo.