1984 (MCMLXXXIV) was a leap year starting on Sunday.
|Unknown date||The Intertidal Zone was drawn by Stephen Hillenburg.|
|June 26||Birth of Aubrey Plaza, the voice of Nocturna.|
|September 27||Birth of Avril Lavigne.|
|November 22||Birth of Scarlett Johansson, the voice of Princess Mindy.|
|December 30||Birth of LeBron James, guest star in "Truth or Square."|
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