David Walliams gets Simon Cowell dancing on Britain's Got TalentViewers of Britain’s Got Talent will tonight witness a rare treat… Simon Cowell dancing.

The notoriously stern faced judge is forced into showing us his best dance moves by fellow BGT judge David Walliams during a performance by one of this years acts.

Two men under the name of Duelling Pianos take to the stage for a very entertaining musical performance which soon sees all the judges and BGT presenters Ant and Dec dancing along.

Never one to let a chance to humiliate Simon pass him by David is soon on his feet encouraging him to dance along.

If you can’t wait to watch tonight’s episode in full then you can check out the clip here.

Catch Britain’s Got Talent on ITV tonight at 7pm.