Confirming that art and commerce can co-exist, 2001: A Space Odyssey was the biggest box-office hit of 1968, remains the greatest science fiction film yet made and is among the most revolutionary, challenging and debated work of the 20th century. It begins within a pre-historic age. A black monolith uplifts the intelligence of a group of apes on the African plains. The most famous edit in cinema introduces the 21st century, and after a second monolith is found on the moon a mission is launched to Jupiter. On the spacecraft are Bowman (Keir Dullea) and Poole (Gary Lockwood), along with the most famous computer in fiction, HAL. Their adventure will be, as per the original title, a "journey beyond the stars". Written by science fiction visionary Arthur C Clarke and Stanley Kubrick, 2001 elevated the SF film to entirely new levels, being rigorously constructed with a story on the most epic of scales. Four years in the making and filmed in 70 mm, the attention to detail is staggering and four decades later barely any aspect of the film looks dated, the visual richness and elegant pacing creating the sense of actually being in space more convincingly than any other film. A sequel, 2010: Odyssey Two (1984) followed, while Solaris (1972), Close Encounters of the Third Kind (1977), The Abyss (1989) and A.I. (2001) are all indebted to this absolute classic which towers monolithically over them all.

On the DVD: There is nothing but the original trailer which, given the status of the film and the existence of an excellent making-of documentary shown on Channel 4 in 2001, is particularly disappointing. Shortly before he died Kubrick supervised the restoration of the film and the production of new 70 mm prints for theatrical release in 2001. Fortunately the DVD has been taken from this material and transferred at the 70 mm ratio of 2.21-1. There is some slight cropping noticeable, but both anamorphically enhanced image and Dolby Digital 5.1 soundtrack (the film was originally released with a six-channel magnetic sound) are excellent, making this transfer infinitely preferable to previous video incarnations. --Gary S Dalkin

Mankind finds a mysterious, obviously artificial, artifact buried on the moon and, with the intelligent computer HAL, sets off on a quest

No director could ever have hoped to repeat the artistic achievement of Stanley Kubrick's 2001: A Space Odyssey, and nobody knew that better than Peter Hyams, who made this much more conventional film from the first of three sequel novels by Arthur C Clarke. Whereas Kubrick made a poetic film of mind-expanding ideas and metaphysical mysteries, Hyams shouldn't be blamed for taking a more practical, crowd-pleasing approach. In revealing much of what Kubrick deliberately left unexplained, 2010 lacks the enigmatic awe of its predecessor, but it's still a riveting tale of space exploration and extraterrestrial contact, beginning when a joint American-Soviet mission embarks to determine the cause of failure of the derelict spaceship Discovery. Having arrived at Discovery near the planet Jupiter, the American mission leader (Roy Scheider) and his Russian counterpart (Helen Mirren) must investigate the apparent failure of the ship's infamous onboard computer, HAL 9000, as well as the meaning of countless mysterious black monoliths amassing on Jupiter's surface (an interpretation Kubrick originally left up to his viewers). Meanwhile, Earth is on the brink of nuclear war, and an apparition of astronaut David Bowman (Keir Dullea) appears repeatedly to promise that "something wonderful" is about to happen. --Jeff Shannon, Amazon.com