The Hitchhiker's Guide to the Galaxy - Season 1 - Episode 4
Arthur learns about the Great Project - the second most powerful computer in existence, called Deep Thought, created to answer the Ultimate Question of Life, the Universe and Everything. The computer comes back online much later on to give its final answer - 42. The scientists are understandably hacked off, even more so when Deep Thought cannot tell them what the Ultimate Question is, and a new computer, called the Earth, has to be built for that purpose. The current owners of the Great Project, Trillian's pet mice, want to cut open Arthur's head to find the Question, but when the crew are all trapped behind a bank of exploding computers, all appears lost.
About The Hitchhiker's Guide to the Galaxy

Title: The Hitchhiker's Guide to the Galaxy
First Air Date: 1981-01-05
Last Air Date: 1981-02-09
Status: Ended
Rating: 8.059/10 (from 34 votes)
Language: EN
Seasons: 2
Total Episodes: 6
Network: BBC Two
Genres: Comedy, Sci-Fi & Fantasy
Production Companies: BBC
Synopsis
Don't Panic! The story of Arthur Dent, an average Englishman who life was spared by his friend, who turned out to be an alien, while the planet Earth is destroyed. His friend tells him about the Hitchhiker's Guide to the Galaxy, a guide with anything you ever needed, and wanted to know. They travel across the galaxy, meeting friendly, and not so friendly characters in order to find the great question (the answer being 42).
Cast

Simon Jones
Arthur Dent

David Dixon
Ford Prefect

Peter Jones
The Book