The TV Show
The Hitchhiker's Guide to the Galaxy TV series first aired on the BBC in 1981. Directed and produced by Alan Bell, it was, for the time, a lavish effects-drenched production.
18.) In a later episode of the TV series, the very tall bodyguard who keeps Ford away from galactic rock star Hotblack Desiato is none other than Dave Prowse - the body of Darth Vader in the original Star Wars films. The Hitchhiker's producers initially wanted the actor who portrayed the flaccid, annoying and vaguely girlie aspects of Darth Vader's personality, but Hayden Christensen wasn't available.
19.) The TV show's computer graphics were created by Rod Lord at Pearce Studios. These visuals were groundbreaking for the time and drew quite a bit of attention to the show. The funny thing is that they aren't actually computer-generated at all. Lord created these effects by animating reversed-out line drawings on acetate. He used lighting gels (the type used in production lighting) to create the colors for the sequences.