During the early days of shooting for Mork & Mindy (and all sitcoms that were shot before a live studio audience), there were usually three cameramen situated around the stage. However, Williams's improv-driven and unpredictable performance as Mork would lead to a lot of misses by the cameramen. "He would run around the stage — you know, run around and do crazy things all the time," Marshall explains. "He would do something great and my dad would go, 'Did you get that? Did you get that?' The cameraman said, 'He didn't come by here.' [My dad would say,] 'You gotta capture this, he's a genius!' And the cameraman said, 'If he's such a genius, he would hit his mark.'"
In the hopes of capturing the genius that was Williams in his element, a fourth cameraman was hired just to follow him. Soon after, four cameras became the TV sitcom standard.