Unilever enlisted TV impressionist Jon Culshaw and ageing rocker Ozzy Osbourne in the latest adverts for its I Can't Believe it's not Butter brand. The TV commercial showed both 'Ozzies' living the rock 'n' roll dream by haphazardly preparing high tea, complete with toast, scones and china cups. It demonstrated how the brand was a top impersonator of butter, with some viewers having trouble telling who was the real Osbourne and who was the impostor - us included.