Before he conceived of Kermit ‘the’ Frog, Sesame Street, or Fraggle Rock, Jim Henson wrote and directed an hour long television special called “Trapped in a Cube.” It’s thought provoking, engaging, and disturbing. Some unlucky kids who happened to see the show when it originally aired have never forgotten the experience, and have claimed as adults that they were changed as a result of seeing this show! Be warned.