Watch Bill Cosby Be Cosby on ‘Late Night With Jimmy Fallon’ Jimmy Fallon kills it night after night, and on Friday evening, the resident king of late-night virality welcomed comedy legend Bill Cosby to the show for a dose of what’s cool, what’s funny and what’s going on with the young people. Click here for Part I, and watch the incredible Part II here: </noscript> Follow Us MORE FALLON FUNNIES: • Watch Mariah Carey, Fallon & The Roots Play Classroom Instruments • Alicia Keys Sings Soulful ‘Gummi Bears’ Theme With Straight Face • Tom Hanks Recites Epic Slam Poem About ‘Full House’ on Fallon • Fallon & ‘Guys With Kids’: Epic ‘History of TV Theme Songs’ Medley • Superfan Chris Christie Joins Fallon for ‘Thunder Road’ Duet