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PHOTOS: Celebrities by The Times Rodney Alcala was described during his 1978 appearance on the show as a successful photographer who enjoyed sky-diving and motorcycling.
But most people today know him as "The Dating Game Killer." Chillingly, Alcala was midway through his spree of killings when he made his "Dating Game" appearance.
Their relationship lasted from 1969 until 1974, according to the memoir she published years later.
In 1967, "The Dating Game" had a special Father's Day episode featuring Groucho Marx's daughter, Melinda.
His answers to the questions knowing his past make this appearance even more disturbing.
Michael Jackson was a guest on "The Dating Game" in 1972 when he was a member of the Jackson 5 and his biggest hit was "Rockin' Robin." Jackson's date, La Tonya Simmons, won tickets to a Jackson 5 concert in New York City. But at least in 1972, they wouldn't be hounded by the press.