Will Smith stopped by Late Night With Jimmy Fallon last night to promote his new flick Men in Black 3 and ended up making some sweet, sweet music with the talk show host. Or, at least, their "great grandfathers" did. Turns out Smith and Fallon's relatives played together on a radio show and their tunes may have inspired some of Smith's hit songs, like "Parents Just Don't Understand." Though Smith remains adamant that he came up with the tunes on his own, the resemblance is remarkable . . .
Photo courtesy of NBC