Judd Apatow's college comedy, Undeclared, features a star-studded cast including Seth Rogen, Charlie Hunnam, and Jason Segel.

He played a camp counselor in the 1995 comedy movie Heavyweights and even had a recurring role on Sabrina, the Teenage Witch. Freaks and Geeks first premiered on NBC in the fall of 1999.

But those movies—like The 40-Year-Old Virgin, Knocked Up and Funny People—owed a lot to the loose, blemish-heavy, quasi-improv sensibility of his TV shows.

1. Creator Paul Feig noted that Freaks and Geeks, which featured a young cast — some of whom hadn’t gone through puberty yet — was NBC’s lowest-rated show when it aired from 1999 to 2000.

In an upcoming project, the “Knocked Up” star is playing a character drastically different from his “Freaks and Geeks” character Ken Miller, who Rogen believes that 25 years later is ...

“My first experience in all of Hollywood was making something great (“Freaks and Geeks”) that no one wanted and was instantly canceled, so that was a good tone setter,” Rogen jokingly told ...