In the show, presenter Robert Llewellyn, with the assistance of scientist Jonathan Hare, look at the science behind a scene in a film. They experiment or perform calculations, to see how the scene would work in real life. The scene is then given an accuracy rating.
The approach is similar to that of the Bad Astronomer, who also uses films as a vehicle to teach science.
The presence of Robert Llewellyn means the tone of the show is fairly light-hearted.
The show started in the BBC's Learning Zone, a section of education programming broadcast in the early morning, meant to be recorded and watched later. It was then given a higher profile programming slot on BBC2 in the early evening.