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Watch Will Smith Rap The 'Fresh Prince' Theme And Reclaim Your Childhood

Plus, he does 'Summertime.'

Will Smith is officially on a roll.

After rapping "It Takes Two" with Jimmy Fallon, and then grabbing the mic for a rendition of his own hit, "Gettin' Jiggy With It," when he stopped by "Late Show with David Letterman," the West Philadelphia born-and-raised powerhouse took the next step on "The Ellen DeGeneres Show":

He rapped the "The Fresh Prince of Bel Air" theme song, as well as "Summertime."

So if you're feeling old, or if you're feeling cold, both of those should bring you to your happy place.

For the "Fresh Prince" theme, Will let the crowd handle the brunt of the load. They did a pretty good job for most of the time, but hit a bit of a wall towards the end.

Then there was "Summertime," where the movie star took the reigns on his own.

Sure looks like he's having fun out there.

His latest movie, "Focus," is out on Friday, Feb. 27.