Hype Williams> For his flashy colorful videos, without a doubt one of the most Influencial music video directors of all time.
Paul Hunter> For his Marylin Manson videos, and for introducing the visual style of Big screen movies, to the music video scene.
Marcus Nispel> For his beatiful but stylish, black white, music videos for THE FUGEES and the Spice Girls.
Michael Bay> For his great visual Ideas, in the Aerosmith video 'Falling in love'

Mmmm, for some strange reason I can't think of anybody else. Anyway, those directors directed at least one, of my top ten favorite videos of all time.