"Michael Jackson's This Is It" premieres tonight worldwide. The film will finally reveal exactly what the King of Pop was working on before his tragic death prevented him from performing his planned 50-date residency at London's O2 Arena. But "This Is It" isn't the only Jackson-related event kicking off this week, as "Michael Jackson: The Official Exhibition" opens in London, just a stone's throw away from the arena that was supposed to host the concerts. The collection features a staggering collection of some of Jackson's most famous costume pieces, props and personal possessions, including a mock-up of the "This Is It" set, a collection of jewelry and a selection of bejeweled gloves. But by far the best item featured is one of Jackson's robotic heads from "Moonwalker."

The Michael Jackson robot (not to be confused with the one he planned on unleashing in Las Vegas) was featured in the main story in "Moonwalker," which saw Jackson save three children from Mr. Big (played by Joe Pesci). Just as he is about to be killed by Mr. Big's henchmen, Jackson sees his lucky star and transforms into a robot version of himself. The robot is able to trounce Mr. Big's thugs and save the children (but not before also morphing into a spaceship). The Jackson robot also made an appearance in the much-beloved "Michael Jackson's Moonwalker" video game.