Step Brothers Highly Improvised

John C. Reilly and Will Ferrell found themselves improvising their way through their new movie about family warfare, called Step Brothers, which is to be released on Friday, reported Reuters.

While the film was being made, the director, Adam McKay, served the role of ringmaster for the two when they were ad-libbing certain scenes of the sibling rivalry that Ferrell and Reilly played, according to Reuters. The two play immature adults, each living with a parent and forced together when one's father and the other's mother become married.

McKay worked with the two on the comedy, Talladega Nights: The Ballad of Ricky Bobby, which was also another very improvised film. They are all teaming up again pulling the three back with their comic style. Ferrell told Reuters, "We had so much fun working on Talladega Nights, the three of us, and we really made a pact, a blood pact, to try to work on something else together." The actor was also part of Saturday Night Live as well as Semi-Pro and Stranger Than Fiction.

McKay was at one point a writer for Saturday Night Live, while Ferrell was a part of the show. They also launched the Web site, Funny or Die, last year, which has videos of professional, as well as amateur comedians, reported Reuters. The Cable TV channel HBO has invested in the site in order to air content from the site, according to Reuters.

The two play brothers thrown together who start with bad footing when they start taking swings at each other with a baseball bat and golf club. They come to find that they are much more alike than they thought and become friends to stir up chaos for their parents who are played by Mary Steenburgen and Richard Jenkins.