Britney Spears' ex-husband Kevin Federline is embarking on a movie career after landing a part in Keanu Reeves' new film.

The dancer/rapper will play a "small but notable" role in the thriller Night Watch, opposite Reeves and Oscar winner Forest Whitaker, according to In Touch Weekly magazine.

It won't be the 29-year-old's first acting job - he appeared in an episode of TV drama Csi: Crime Scene Investigation, which aired in America last year.