The Hitchhiker's Guide to the Galaxy

Arthur Dent is trying to save his house from demolition when Ford Prefect reveals he's an alien and that the Vogons are about to destroy Earth. The two escape, get rescued by Zaphod Beeblebrox and Trillian on the Heart of Gold. On Magrathea, Arthur meets Slartibartfast and learns that Earth was a computer commissioned by mice. An explosion throws the group into the future, to Milliways, the restaurant at the end of the universe, where Marvin now parks cars. They steal the band Disaster Area's ship. Arthur and Ford teleport off and land on prehistoric Earth, aboard a ship of Golgafrinchans who will become humanity's ancestors. Zaphod, Trillian and Marvin are left behind.

1. CameoDouglas Adams walks into the sea

   Adams has cameos in the first three episodes. In one, he's the naked man walking into the sea. In another, he's drinking at the back of the pub.

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2. Behind the scenesHand-made computer graphics

   The Guide's screens look like computer graphics, but Rod Lord animated them by hand, frame by frame, on film. The work won a BAFTA.

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3. Behind the scenesThe head that wouldn't work

   Zaphod's second head was a radio-controlled animatronic with twelve servo motors. It broke down so often that it just sits there in many scenes.

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