THE SIMPSON creator Matt Groening has snubbed new British Prime Minister Gordon Brown by insisting he'll never have a cameo on the hit animated series. While Brown's predecessor Tony Blair guest starred on a show in 2003, cartoon genius Groening is adamant there won't be another British statesman on the show for years. He says, "One Prime Minister per century is enough." Earlier this week (04Jul07) Blair's performance on The Simpsons was hailed by the programme's writer Al Jean, who said, "He was so good, we were able to use his first take because he was so good." In the episode, Blair meets the Simpsons at London's Heathrow Airport and invites them for tea at his official residence, No. 10 Downing Street.