Jimmy Fallon, Natalie Portman don wigs, sing along with Sia

Sia must travel with like 20 wigs for her mini-me dancers and the talk-show personalities hosting her.

Because there was enough Cruella DeVil hair to outfit Jimmy Fallon, Natalie Portman and the Roots last night when they did a variation on the classroom instruments segment. They tag-teamed the Belle Stars' version of Iko Iko, perhaps best known for its use in the 1988 movie Rain Man.

And that wasn't the only musical goodness on Fallon last night. John Oliver, whose Last Week Tonight returns to HBO this weekend, regaled the audience of how his wife and LL Cool J rapped Doin' It, his 1995 ode to the act of love, at the baggage claim area at New York's LaGuardia Airport.

Oh, and how he pulled off his trip to Russia to interview Edward Snowden.

And if all that is somehow not enough for you, here's Harvard grad and human Wikipedia Natalie Portman