The "Moonwalk" also known as the "Backslide" is a complicated Dance Move populurized by the king of pop himself Michael Jackson. Before Michael the Moonwalk was simply known as the Backslide, first used by Tony Montanaro in a mime act. Later in 1943 a tap dancer known as Bill Bailey, preformed a version of the Backslide during a skit.
Also Jeffrey Daniel, Cab Calloway, and even Betty Boop have done the Moonwalk or Backslide! Michael did not invent it he just improved it and made it his own. It became famouse after his performance in The first Moonwalk performed on Motown 25: Yesterday, Today, Forever
But only after Michael Jackson's performance of hit song Billie Jean in TV Special during the early 1980's the Moonwalk became famous. Being a perfectionist Michael was not happy with his Moonwalk. But it will always be remembered as a magic moment in music/dance history.
The Moonwalk is the of stepping forward while actually moving backward. And it became famous after this very performance! It is done at 3:35 - 3:45