Jimmy Fallon and Will Smith are back at it with yet another epic joint performance on The Tonight Show, and this one just might rival that time they took us through the evolution of hip-hop dancing back in 2014. The dynamic duo teamed up to sing a glorious mashup of TV show theme songs, and it was LIT. From Golden Girls and Three's Company to Full House and The Jeffersons, their remix was like a trip down memory lane. And of course, they saved the best for last, belting out the theme song for The Fresh Prince of Bel-Air while dancing through the crowd. Needless to say, the entire audience was on their feet and groovin' along to the throwback hit. Watch Fallon and Smith break it down in their "History of TV Theme Songs" skit above.