Aha! Skinning toms gone viral on the net apparently - the American chef is called Justin Chapple, and here is a link to the video:
http://www.littlethings.com/tomato-sauce-cheese-grater/?utm_source=LTdiy&utm_medium=Facebook&utm_campaign=foodhacks
(try this link, if not, cut and paste above)
Credit where it's due!
