What do entertainers as diverse as Frank Sinatra, Gypsy Rose Lee, and Rod Serling have in common? Each one adored The Andy Griffith Show. Serling, the brain behind The Twilight Zone, another enduring television classic, even described Andy Griffith as “one of the few genuinely funny comedies in the medium” in a 1963 TV Guide Magazine article that reported he often visited the nearby set. “What hits me is that the people are characters,” he added, “not caricatures.” That’s certainly been key to The Andy Griffith Show‘s longevity. The actor’s canny sheriff, Andy Taylor, and the other mildly eccentric and eminently lovable residents of the small Southern town of Mayberry have entertained generations for 65 years — even ones who weren’t yet born when the sitcom premiered on CBS on October 3, 1960. Viewers still laugh, cry, and empathize, which is why, each May, MeTV rolls out its annual “Month of...