Want a recap of what happened in The Hobbit and The Lord of the Rings books? Dominic Monaghan and Billy Boyd explain the plots of "The Hobbit," "The Fellowship of the Rings," "The Two Towers," and "The Return of the King" in just 15 seconds per book! | The Late Show with Stephen Colbert

Dominic Monaghan, Billy Boyd, and special guest Peter Jackson try to find a “Lord of the Rings” trivia question that will stump our host. And to up the stakes, they have a special LOTR prize for Stephen if he can get it right. | The Late Show with Stephen Colbert

Stephen Colbert and Jon Batiste have a rap to celebrate the 20th anniversary of "Lord of The Rings." Featuring friends of the show: Elijah Wood, Sean Astin, Billy Boyd, Dominic Monaghan, Hugo Weaving, Andy Serkis, Orlando Bloom , Viggo Mortensen, Method Man,, Killer Mike GTO, and Anna Kendrick! #LOTR #LSSC | The Late Show with Stephen Colbert