Science-Fiction on PBS.
"The HitchHiker's Guide to the Galaxy"
All 7 episodes of Douglas Adams' "The HitchHiker's Guide to the Galaxy" are available to, and have aired on PBS.
SCIENCE-FICTION ON PBS:
The HitchHiker's Guide to the Galaxy
The Man from UNCLE
The Invisible Man
2001: A Space Odyssey
Space Island One
Lost in Space, Land of the Giants, The Time Tunnel
Overdrawn at the Memory Bank
The Lathe of Heaven