Will Smith staged an impromptu The Fresh Prince Of Bel-Air reunion during a U.K. TV interview by bringing on his former co-star Alfonso Ribeiro and longtime collaborator Dj Jazzy Jeff during the recording.

The Men In Black star and his teenage son Jaden were among the guests on The Graham Norton Show, which aired on Friday night (24May13), and the actor reminisced about a previous appearance on the program, when he performed his famous rap theme tune to the hit sitcom.

He told Norton, "Last time I was here I did my Fresh Prince rap - eight million YouTube hits was on that. This time I brought my DJ Jazzy Jeff."

Will Smith rapped the song with Jaden as Jazzy Jeff took to a set of DJ decks, and at the end of the performance the actor declared, "You like that? Well hold up Graham my man I'm not through - one more little surprise just for you."

Alfonso Ribeiro, who played Smith's onscreen cousin Carlton Banks, then appeared onstage and the trio danced on the studio floor as Tom Jones' It's Not Unusual played - much to the delight of the audience.

Graham Norton then joined the stars for a dance-off to Apache (Jump On It) by The Sugarhill Gang.

The talk show host exclaimed, "That is so cool! What a treat that was."