Ron Howard is making a movie about the Bluths using an A-List cast. But Dr. Tobias plays himself because nobody wants to play him in the movie. The Bluths decide to make their own movie in contention with Ron Howard’s.
A movie within a movie? Could be interesting. Rumor for now, of course, but the official details are also rumored to be coming soon. At least they finally got Michael Cera on board... I have no idea why he was opposed. Probably some BS about not wanting to play that character again, even though he's played it in every single one of his movies.