For Britney Spears, the worst thing he ever did in his career was not an incident of head shaving, failed his remix album, or even 2002 film "Crossroads."
In an interview with The Telegraph in support of his latest album, "Britney Jean," and residency mendatangnya in Las Vegas, Spears pointed his documentary mini-series "Chaotic," with then-husband, Kevin Federline, as the biggest mistakes in his career.