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Shelley Hack was a guest star in the TV series The Love Boat in March 1980. Her performance in this episode was outstanding (a really big revelation, if I must say so.) She never fumbled her lines and she was really, truly, genuinely funny in her role. She's such a treat to watch.
She was still in Charlie's Angels when this episode was filmed and subsequently aired. It really makes me wonder. If she was capable of delivering a performance of this caliber at the time, why was she given so little to do or say in Charlie's Angels?