In 1976, Best Actress winner Louise Fletcher (One Flew Over the Cuckoo's Nest) signed her acceptance speech to her deaf parents. The Academy decided that her presentation was "cute," so during the 1977 ceremony, Debby Boone was scheduled to perform her Oscar-nominated song "You Light Up My Life" accompanied onstage by 11 young girls from the John Tracy Clinic for the Deaf who signed the lyrics as she sang. Eagle-eyed viewers, however, noted that each girl seemed to be signing a different song. It was later revealed that at the last minute a group of (non-Deaf) students from the nearby Torrence Elementary School had been recruited instead, and they had been signing gibberish.

This post was excerpted from Kara Kovalchik's '6 Odd Moments in Oscar History.'