John Lithgow joins the Dog Fight
John Lithgow is in talks to join Dog Fight alongside Will Ferrell and Zach Galifianakis.
The Third Rock From The Sun actor has been cast in an unknown role in Jay Roach's political comedy, reported Variety.
Will and Zach star as rival politicians who resort to underhand tactics as they fight for a congressional seat in a small North Carolina district election.
Jason Sudeikis, Dylan McDermott, Sarah Baker, Katherine LaNasa and John's Rise Of The Planet Of The Apes co-star Brian Cox will also appear in the movie, which has been written by Funny Or Die creator Chris Henchy and Eastbound & Down's Shawn Harwell.
Dog Fight is expected to be released in US cinemas in August 2012.
John - who is set to feature in Judd Apatow's Knocked-Up spin-off This Is Forty - is preparing to return to Broadway in The Columnist in spring 2012.