Briefly: Justin Theroux‘s primary gig is acting (Mulholland Dr., American Psycho, Wanderlust) but his stint as a writer on Tropic Thunder has led to some great follow-up deals. He wrote Iron Man 2, and wrote and is set to direct Zoolander 2. (Should that movie actually happen, that is. Ben Stiller recently said “it’s not coming together right now.”)

Now he’s got another high-profile directorial gig booked, as he’ll rewrite and direct Swear to God for Gary Sanchez and Warner Bros., with Will Ferrell and Steve Carell starring. Deadline says “Ferrell will play a narcissistic hedge fund manager who thinks he has seen God.” We don’t have any details in Carell’s role.

The script was originally written by Alan Cohen and Alan Freedland (Due Date). Adam McKay, Chris Henchy, and Farrell will produce for Gary Sanchez. WB wants to have this one shooting next July; it would happen after Ferrell and Carell finish Anchorman 2.

Briefly: Could there be another Will Ferrell comedy directed by Adam McKay? The two previously made Anchorman, Talladega Nights, Step Brothers and The Other Guys, and have teamed on shorts for Funny or Die. They’re also prepping the ensemble football comedy Three Mississippi. Now Warner Bros. has picked up Swear to God, a pitch by Due Date writers Alan Cohen and Alan Freedland which has Will Ferrell attached to star as “a narcissistic hedge fund manager who thinks he has seen God.”

Deadline broke the news and initially said that Adam McKay is attached to produce and direct. But the site altered the story slightly with an update that the director’s reps claim he is not attached to direct at this point. Given that he’s already got Three Mississippi going with Will Ferrell (and is hoping to do the comic adaptation The Boys) I’m inclined to take the reps’ claim at face value.