Footage of Michael Jackson's last performance in This Is It has fans salivating, and this clip of Human Nature proves the legend could still wow 'em. Ignore his pale, thin frame and enjoy the all-too-brief music.

John Mayer's mellow, instrumental rendition of Human Nature seemed to be a much needed respite, a time for people to reflect or compose themselves.  Broken up only once by the breathy backup vocals, the song seemed to have a...