Watch Will Smith Perform the 'Fresh Prince of Bel-Air' Theme Song on 'Ellen' (Video)

The ultimate in-studio audience fan test.
Michael Rozman/Warner Bros.
Will Smith

Will Smith has a knack for rapping during TV appearances.

Just days after spontaneously leading the Late Show With David Letterman audience in a good ol' fashioned sing-along to his entrance music, "Gettin' Jiggy Wit It," he stopped by The Ellen DeGeneres Show and did the same with the theme song to The Fresh Prince of Bel-Air.

See more Watch Will Smith Rap Along to His Own Entrance Music, "Gettin' Jiggy Wit It" (Video)

"Now this is how we know if we've got real fans in the audience," he said of knowing the lyrics to his '90s sitcom rap.

Watch Smith's performance below.

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