Rik Waller
Ricky Gervais reoccuringly jibes 'fats' Waller during the Xfm radio shows. Ricky thinks that there's no excuse for being fat, and mocks his attempts at regaining his fitness on celebrity fat club.
Waller himself came to fame from Pop Idol, an audition show for singers. He didn't win the series, but gained enough popularity to release a relatively successfull single. He is currently the singer in a soul style band called Rik Waller's Unfinished Business.