August 21

Television

 * 1999 - The Disney Channel Original Movie Genius premieres on Disney Channel.
 * 2004 - Brandy & Mr. Whiskers premieres on Disney Channel with the episodes "Mr. Whiskers's First Friend/The Babysitter's Flub", "To the Moon Whiskers/Cyranosaurus Rex", "Lack of Brains vs. Brawns/The No Sleep Over", and "The Fashion Fascist/Happy Birthdays".
 * 2005 - The Phil of the Future episode "Phil Without a Future" premieres on Disney Channel.
 * 2008 - The Emperor's New School episode "Kronk the Magnificent/Kamp Kuzco" premieres on Disney Channel.
 * 2009 - The Wizards of Waverly Place season two finale, "Retest", and The Suite Life on Deck episode "In the Line of Duty" premiere on Disney Channel.
 * 2011 - The Good Luck Charlie episode "Termite Queen" and the Shake It Up season one finale "Throw It Up" premiere on Disney Channel.

Theme Parks

 * 1995 - The PeopleMover closes at Disneyland.

People
Births
 * 1920 - Christopher Robin Milne - Insperation for the Winnie the Pooh stories and the character of Christopher Robin.
 * 1989 - Hayden Panettiere - Actress