A dispute over ad revenue may lead to the end of Rush Limbaugh's relationship with Cumulus Media. Reuters

Rush Limbaugh will be the subject of an upcoming movie from actor and filmmaker John Cusack. The conservative radio host has never shied away from attention but it could be tough for him to see his likeness portrayed by an actor who has been outspoken about his liberal views.

Director Betty Thomas told the Associated Press she’s finishing up the film’s script, and production will start in 2013. The working title is “Rush.”

Limbaugh, 61, has yet to comment on the news. He’s known almost as much for his heft and balding head as his bombastic voice, but the on-screen radio host could have Cusack’s thick black hair.

Cusack was a blogger for the Huffington Post from 2005 to 2009 and has been vocal about his critical views toward President Bush and President Obama’s policy of drone warfare in the Middle East.

Limbaugh has been in the news of late for his recent sparring match with NBC news anchor Brian Williams. Limbaugh attacked New Jersey Governor Chris Christie for working together with President Obama in the Hurricane Sandy relief efforts. On his daily show Limbaugh said the two had a “man love” and that Christie “has gone overboard in praising a failed president.”

Williams said on his show “Rock Center” that Limbaugh went too far by being too critical of the Obama administration after the devastation Sandy caused.

“So after all this loss you might be curious as to why Rush Limbaugh went after Gov. Christie today. It was because he’s getting along so well with the president, working together, saying nice things about Barack Obama. Just when we feared the storm wiped away everything, we learned politics survived,” Williams said.

Politico reported that Limbaugh responded to Williams’ assessment in his typical fashion.

“Brian, come on. What do you think the stroll on the beach with Obama and Christie was? It was politics. Why do you think Obama called Christie and wanted to go into town? It was politics,” he said. “Real leadership would’ve have been Christie and Obama and whoever else gathering in a command center and coordinating relief efforts with them not on the scene.”