For the first decade or so of Jason Segel's career as a Hollywood actor, he appeared in mostly teen-oriented material -- beginning with the jet-black comedy Dead Man on Campus (1998), then the NBC comedy drama Freaks and Geeks (1999), then the truly ugly frat-boy comedy feature Slackers (2002), helmed by tyro Dewey Nicks. After a brief turn as Larry the Hippie in Mark Rucker's farcical melodrama Die, Mommie, Die! (2003), Segel achieved broader recognition for his performance as Marshall on the sitcom How I Met Your Mother. He also played Jason in the big-screen feature Knocked Up (2007), Judd Apatow's uproarious follow-up to The 40-Year-Old Virgin.
Segel both authored the script and starred in the big-screen romantic comedy Forgetting Sarah Marshall (2008). In the film, he plays a young man roundly dumped by his screen-queen girlfriend (Kristen Bell), only to head off to a resort and discover that she's staying there with her new significant other. Segel has also starred in the film "I Love You, Man" with Paul Rudd and is currently working on a Muppets film.