Jimmy Fallon and Will Smith Chronicle the Evolution of Hip Hop Dancing on Fallon’s Debut ‘Tonight Show’

For his first-ever Tonight Show, Jimmy Fallon pulled out all the stops: there was U2, Joan Rivers’ first NBC late night appearance since being banned in 1986 and about a billion other celebrity cameos. Plus, Fallon somehow convinced Will Smith to don a pair of overalls and dance with him.

If this is what Fallon’s Tonight Show has in store, Jay Leno should get used to retirement, because NBC won’t be asking him back anytime soon.