Author Arthur C. Clarke and the cast and crew of Stanley Kubrick's 1968 masterpiece "2001: A Space Odyssey" star in this documentary, released in the film's long-anticipated title year. The origins of the production are traced as we see how the early days of the space race influenced Kubrick and Clarke's vision of a far more optimistic 21st century than we've managed to achieve - at least so far.
| Actor | Role |
|---|---|
 Arthur C. ClarkeSelf | Self |
 Keir DulleaSelf | Self |
 Freeman DysonSelf | Self |
| WWally GentlemanSelf | Self |
| DDaniel GoldinSelf | Self |
 Peter KuranSelf | Self |
 Larry NivenSelf | Self |
 Daniel RichterSelf | Self |
| RRobert J. SawyerSelf | Self |
| RRichard TerrileSelf | Self |
 Douglas TrumbullSelf | Self |
| DDavid PritchardNarrator | Narrator |