Jimmy Fallon stepped into Jay Leno's shoes on Monday night to host his first episode of 'The Tonight Show'. And one of the show's highlights was the moment above: Will Smith joining Fallon for a demonstration of hip-hop dancing moves, from the 'cabbage patch' to the 'Carlton' via such classics as the 'running man' and MC Hammer. All while wearing oh-so-'90s denim dungarees. Marvellous.
And Will Smith wasn't the only big name making an appearance during Fallon's debut - not by a long shot. To see what we mean, check out this clip... and make sure you stay for Stephen Colbert's impression of Breaking Bad's Jesse Pinkman.