Another example of how even creativity was freer then. If a cameo worked, and if you could do it, you just did it. One time on The Lucy Show, she was inducted by mistake, and when the mistake was corrected, the Sarge said that he could never imagine a bigger screw-up than her. On that cue, in walks Jim Nabors, playing you-know-who in all but name. Prolly in those days, Lucy called Danny Thomas (Producer of Andy Griffith and Gomer Pyle), and DT said 'Sure!' and that was that.