EXCLUSIVE: Australian actor Josh Lawson has been cast in Warner BrosDog Fight, the Jay Roach-directed comedy that stars Will Ferrell and Zach Galifianakis and begins shooting this month. Dylan McDermott also recently joined up, as did reportedly Jason Sudeikis. The plot revolves around a political candidate (Galifianakis), and Lawson will play his brother; the script originally called for two brothers, but the roles were combined after Lawson’s table read. Lawson starred in the Aussie improv show Thank God You’re Here and is set to appear in the Don Cheadle-starring Showtime series House Of Lies that premieres in January. He’s repped by UTA, Management 360 and Lisa Mann Creative Management in Australia.