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The 27-year-old thinks it's a realistic representation.
"Yeah, I mean, all this stuff, every character in the movie is a possible way that someone could turn out," said Rogen.
In "Funny People", Sandler plays a famous comedian who's become a jerk. He befriends up-and-coming comic, played by Rogen, after he's diagnosed with a serious disease and he realizes just how lonely his life has become. He ends up asking Rogen's character to write some jokes for him.
"That emotionally resonated with me the most when reading the script and watching it," said Hill.
Jonah Hill co-stars as a fellow comedian who tries to hang on to his standup credibility, while justifying taking a role in a generic sitcom. The young actor can relate.
"That was the joke of every pilot season I ever went out for. It's so funny that sometimes you really don't like it, but you just are so desperate for a job. You want some sort of identity and you want to get your foot in the door," said Hill.
"Funny People" is written and directed by Judd Apatow and is in theaters Friday.