Prisoners of Gravity was a Canadian public broadcasting television news magazine program that explored speculative fiction — science fiction, fantasy, horror, comic books — and its relation to various thematic and social issues. Produced by TVOntario, the show was the brainchild of former comic retail manager Mark Askwith and writer Daniel Richler, and was hosted by Rick Green. The series aired 139 episodes over 5 seasons from 1989 to 1994.

King Arthur, accompanied by his squire, recruits his Knights of the Round Table, including Sir Bedevere the Wise, Sir Lancelot the Brave, Sir Robin the Not-Quite-So-Brave-As-Sir-Lancelot and Sir Galahad the Pure. On the way, Arthur battles the Black Knight who, despite having had all his limbs chopped off, insists he can still fight. They reach Camelot, but Arthur decides not to enter, as "it is a silly place".