Jimmy Fallon’s empty obsession with nostalgia can feel incredibly Buzzfeedy at times, but sometimes, that nostalgia works to great effect. Such is the case here, where he runs the duet gamut with Kelly Clarkson, from Paula Abdul and MC Skat Kat (which sounds a lot dirtier now than it did in the 90s) to Stevie Nicks/Tom Petty’s “Stop Dragging My Heart Around” to Lionel Richie and Diana Ross’ “Endless Love.”