Will Smith Shocks Guests, Raps at Gabrielle Union Birthday Party

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Go, Will Smith. Go, Will Smith. Go, Will Smith. GO!

The movie star - who has spent more time managing the career of Jaden and Willow Smith than anything else over the past few years - surprised (40th!) birthday girl Gabrielle Union and attendees at her Miami party over the weekend by showing up and taking the stage alongside Doug E. Fresh.

With the latter beat-boxing, Smith freestyled a bit and then went into both "Summertime" and the Fresh Prince of Bel-Air theme song.

For those who forgot how talented of a musician this man actually is, click Play now: