The moonwalk (also known as "the Glide" by inner-city youth) is a dance move in which the dancer moves backwards while appearing to be making the physical movement of walking forwards. A popping move, it became popular around the world after Michael Jackson performed the dance move during a performance of "Billie Jean" on Motown 25: Yesterday, Today, Forever on March 25, 1983. This special was broadcast May 16, 1983. It subsequently became his signature move.
An illusion is involved in creating the appearance of the dancer gliding backwards. Initially, the front foot is held flat on the ground, while the back foot is in a tiptoe position. The flat front foot remains on the ground but is slid lightly and smoothly backward past the tip-toe back foot. What is now the front foot is lowered flat, while the back foot is raised into the tiptoe position. These steps are repeated over and over creating the illusion that the dancer is being pulled backwards by an unseen force while trying to walk forward. Variations of this move allow the moon walking to also appear to glide forwards, sideways, and even in a circle. (Full article...)