This series, which started Arthur Dent's journey through the galaxy, saw the demolition of his planet to make way for a hyperspace bypass, an encounter with the most depressing robot in the universe and a spot of time travel. There is also the little matter of discovering the ultimate answer to life, the universe and everything.
The second series in the ever-growing 'trilogy' sees Zaphod Beeblebrox being put through the Total Perspective Vortex - the greatest torture a sentient being can face. Meanwhile Arthur discovers that there is a statue of himself on a planet which contains an entire archaeological layer of compressed shoes, and meets the rather odd man who apparently runs the universe.
Based on Douglas Adams's novel Life, The Universe And Everything, this 2004 series - overseen by Dirk Maggs - saw the return of Hitchhikers to the airwaves for a new series, 26 years after the originals were broadcast. Arthur and Ford, with the help of Slartibartfast try and prevent the galaxy from being destroyed by a xenophobic alien race who play a sport that Arthur is rather fond of. Arthur also meets an alien whom he apparently keeps accidentally killing.
Based on So Long, And Thanks For All The Fish, this series sees Earth somehow popping back into existence. Arthur hitch-hikes his way back home, and just happens to fall in love with the woman on the passenger seat. Maybe all will be answered when they discover God's last message to his creation? This series also sees Marvin the Paranoid Android die - being 37 times older than the universe, no-one can say Marvin's life was too short.
Adapted from Mostly Harmless. Ford is horrified to learn that The Hitchhiker's Guide to the Galaxy offices have been taken over by the worst beings imaginable. Meanwhile Arthur, who now has a job making sandwiches, learns from Trillian that he is a father. Back on Earth, a woman who is almost identical to Trillian is visited by aliens from Earth's ten planet, known as 'Rupert'.