Les Nessman's Imaginary Walls -
On the situation comedy WKRP IN CINCINNATI/CBS/1978-82, Les Nessman (Richard
Sanders), the news director for radio station WKRP wished
he had his own office and so he created his own private workspace out of thin air. "This is where the walls of my office would be if I had walls," said Les
matter of factly.
When you approached his work area (the imaginary walls were marked by tape on the
carpet floor), you had to simulate knocking on a door that wasn't there before
he would acknowledge your presence. See also "Les Nessman's Bandage"