Drew Barrymore gleefully crashes Jimmy Fallon and The Roots' freestyle song game

Freestylin' with The Roots, a Tonight Show segment which sees The Roots improvising songs about audience members based on a few simple questions, is already wholesomely entertaining enough.But when you add in a surprise guess appearance from a semi-disguised Drew Barrymore, the whole thing goes up a notch.Come for the music, stay for how genuinely excited Fallon is to have Barrymore on the show.Want more?Brendon Urie, Jimmy Fallon, and The Roots cover 'Under Pressure' using pan lids, wine glasses, and... a toaster?BTS' 'Dynamite' performance with The Roots is the best remix yetJimmy Fallon and The Roots join Paul McCartney, Tori Kelly and more for 'Wonderful Christmastime'