At the height of the Rock's popularity in 2000, the "People's Champion" went into the studio to cut a rap single with ex-Fugee Wyclef Jean. The result, "It Doesn't Matter", peaked at #3 on the UK chart, but research doesn't tell us how far it went here in the US. Go figure.
Rock (Dwayne Johnson) was so inspired, he recorded a rap of his own for a WWE (then-World Wrestling Federation) CD, titled after his favorite dessert dish, "Pie". Needless to say, that CD flopped.