Michael Cera is reportedly set to play himself in an indie drama, written and directed by Mark Webber.
The Scott Pilgrim Vs The World star will appear as a "heightened version of himself", alongside Amanda Seyfried, Shannyn Sossamon and Jason Ritter, according to The Hollywood Reporter.
The as-yet-untitled movie, currently in production in Los Angeles, will focus on a struggling single dad (played by Mark) and his relationship with his two-year-old son - who will be portrayed by Mark's own son of the same age.
"That's the crux of the film. After spending so much time with my son being a father, I became obsessed with the idea of showing the most authentic father-son dynamic on screen," Mark told The Hollywood Reporter.
"It's been really cool and eye-opening to limit the exposure to my son but create the scenes and moments that seem realistically uncomfortable."
The celebrities are his real friends. Mark, whose biggest screen credit is a small role in Scott Pilgrim Vs The World, said: "I'm getting them to show a real side of who they are and smash that up with people's expectations of celebrity."