Mos Def is an American rapper and actor. He released the albums Black On Both Sides, The New Danger, and True Magic. Mos Def has collaborated with Kanye West and Al Be Back on the song Good Night and has popular songs including UMI Says and Mathematics. He has appeared in the films Talladega Nights: The Ballad of Ricky Bobby and The Hitchhiker's Guide to the Galaxy, as well as the television series Chappelle's Show. Mos Def also hosted the podcast The Midnight Miracle.