U.S. TV bosses are so thrilled with Britney Spears' guest spot on sitcom HOW I MET YOUR MOTHER, they want to give the pop star her own show. The singer's cameo as a secretary in the comedy was a huge success when it aired this week (24Mar08), attracting 10 million viewers - its highest ever ratings. And network chiefs at CBS are now planning to hand Spears future guest appearances, before creating her own spin-off sitcom. Sources tell the National Enquirer, "Britney did a great job playing the cute, funny receptionist - and really enjoyed herself. "Doing a TV show will help Britney keep focused - plus keep her in Los Angeles, where she can see her kids regularly and create a positive work routine."