Before he rushes to this calamity, Gerwig cuts to Allan, who cries out in comical concern, "KEN!" Michael Cera screams as if he's a cartoon character whose baby has just been chucked into traffic.

The 'Superbad' alum says fame 'makes you paranoid and weird.' He's Ken's buddy! Kate McKinnon, Michael Cera and Issa Rae chat with ET's Denny Directo about the highly-anticipated 'Barbie' film ...

Jon Kopaloff/Getty Images; Rich Fury/Getty Images Michael Cera’s This Is the End persona may have been fake but that memorable slap was not. The Barbie actor, 35, played a fictionalized version ...