50 Cent's "I Get Money" and Audio Two's "Top Billin'"
There is not a hip hop head who has not heard Audio Two's 1987 breakout hit, or at least some portion of it. One of the most recognizable reworks is from 50 Cent, who got a hold of those drums and flow for the third single of his third album, Curtis. "I Get Money" was a Top 20 smash 20 years later.
(Photos from left: Jamie McCarthy/Getty Images for Mercedes-Benz, Atlantic Records)