Jason Jordan Segel is an American actor. He is best known for his role as Marshall Eriksen in the CBS sitcom How I Met Your Mother from 2005 to 2014. He began his career with director and producer Judd Apatow on the television series Freaks and Geeks (1999–2000) and Undeclared (2001–2002) before gaining prominence for his leading roles in various successful comedy films in which he has starred, written, and produced.

Freaks and Geeks is an American teen comedy-drama television series created by Paul Feig and executive-produced by Judd Apatow that aired on NBC during the 1999–2000 television season. The show is set in a suburban high school near Detroit during 1980–81. The theme of Freaks and Geeks reflects "the sad, hilarious unfairness of teen life". With little success when it first aired, due to an erratic episode schedule and conflicts between the creators and NBC, the series was canceled after airing 12 out of the 18 episodes. The series became a cult classic, and Apatow continued the show's legacy by incorporating the actors in future productions.