November 18, 1928
You still look great for 81 :-)
Mickey Mouse is arguably the most famous of the Disney cartoon characters. Making his debut in "Steamboat Willie" at the Colony Theatre in New York City on November 18, 1928, Mickey went on to star in over 120 different cartoons. He also starred in "The Mickey Mouse Club" television show of the 1950s.
http://disney.go.com/vault/archives/...ey/mickey.html