Colonel Potter (Harry Morgan) refers to "Valentino" stating his wife went into labor when she heard he died in 1926. He is referring to silent film star and international sex symbol Rudolph Valentino (May 6, 1895 - August 23, 1926), who died in New York City of peritonitis.
Klinger appears to be a fan of The Shadow radio show, quoting the show's tagline "The Shadow Knows!"
B.J.'s dog's name is Waggle Hunnicutt. Radar's dog is named Ranger.
Syngman Rhee was the first president of the Republic of Korea