Britney Spears has been praised for her guest appearance on US TV show How I Met Your Mother.The troubled pop star played a love-struck receptionist in a clinic who falls for the main character Ted on the CBS show.Media and crisis management consultant Robbie Vorhaus told a US newspaper: "This will be remembered as the beginning of the return of Britney as an actress, a personality, as someone trying to be normal in a pretty crazed world. Good for her."Spears spent two days filming the scenes and executive producer Carter Bays described her as "a professional".He was quoted as saying: "She seemed to have a good time. I think she was grateful to be here."The 26-year-old last made a TV show guest appearance in the sitcom Will & Grace in 2006.© Independent Television News Limited 2008. All rights reserved.