Based around two struggling bit-part actors - Andy Millman, played by Gervais, and Maggie Jacobs (Ashley Jensen) - each episode takes place on a different film set and features a new celebrity playing a version of themselves. Kate Winslet, for example, appears as an Oscar-craving actress, while EastEnders star Ross Kemp mocks his hard-man image.
In the first episode, Starsky and Hutch star Ben Stiller spoofs himself by playing an arrogant director making a serious drama about the Bosnian conflict.