No single artist has shaped, innovated or defined the medium of "music video" more than Michael Jackson. The popularity of MTV itself was rocketed into the stratosphere by a clip so good that it defied antiquated, racially biased ideas of rock music programming. The iconic directors behind decades of cinematic masterworks - The Godfather, Raging Bull, Do the Right Thing, Boyz N The Hood, The Social Network - can all claim his as a collaborator. And 13,597 people in Mexico City didn't break the world record for dancing to Prince now did they? Here are his 20 best, with stories of how they came to be.