There's a LOST Disney Cinemagic ident that to promote the Disney/Pixar film Monsters, Inc.. This ident shows a studio set where a pixie dust flies around before the objects and the channel's logo into monsters. Also, when the ring (which reads "cinemagic") from the logo falls down, the logo takes it to make correct.
UPDATE: It has been found on YouTube on a video uploaded in 21st September of 2019. Link: https://youtu.be/RkTjcXZD8Xk