Inside My Head was a proposed, but unproduced, hour-length program in 1969 for NBC's Experiment in Television series (which also featured The Cube). The concept intended to take on a "Limbo"-like approach in order to "gain new awareness and respect for the mind." The visual representations for how the brain works, Henson explained, "would be based on all the known facts about the brain which are not only fascinating, but more amazing and wondrous anything a science fiction writer would invent." No television network expressed interest in the project.