Earlier this month, [article id="1621523"]MTV debuted the trailer for "Michael Jackson's This Is It,"[/article] the documentary about the final days of MJ's life as he prepared for his London comeback concerts. The exclusive footage gave us our first peeks at his rehearsals for "Billie Jean," "Smooth Criminal," "Bad," "Wanna Be Startin' Somethin'," "Don't Stop 'Til You Get Enough" and "Man in the Mirror."

A new clip has now surfaced that reveals another song Jackson planned to perform in London: "Human Nature," a top-10 Billboard hit from his 28-time platinum album Thriller.

In the clip, Jackson stands on a barren stage as he works on the dance routine for the song. As he begins to sing the second verse, he interrupts the lyric and shoots his hand up into the air. "Get me out -- bam!" he says. "Something right there."

With a hands-free mic strapped to his head and wearing a tuxedo with sparkling white lapels, Jackson sings somewhat a cappella as a keyboard and bass occasionally play notes in the background. By the time he gets to the chorus -- "If they say, why, why, tell 'em that is human nature" -- the entire band has jumped in. Jackson then continues to try out different moves, strutting up and down the stage and grooving to the music. The clip then cuts to another Jackson rehearsal of "Human Nature." This time he's wearing tight red pants and a shimmering gold jacket as he busts into a dance move.

Drawn from more than 100 hours of behind-the-scenes footage, "Michael Jackson's This Is It" hits theaters for a limited, two-week engagement starting October 28.