Jason Jordan Segel (/siɡəl/; born January 18, 1980) is an American actor, comedian, and screenwriter. He is best known for his role as Marshall Eriksen in the CBS sitcom How I Met Your Mother, as well as for his work with producer Judd Apatow on the television series Freaks and Geeks and Undeclared. Segel has also starred in several films, including Forgetting Sarah Marshall, Sex Tape, Knocked Up, The Muppets, Despicable Me, and The Five-Year Engagement.