who played will ferrell's brother in step brothers
Step Brothers (film) Step Brothers is a 2008 American comedy film directed by Adam McKay, written by Will Ferrell and McKay from a story by Ferrell, McKay, and John C. Reilly and starring Ferrell and Reilly. It follows Brennan (Ferrell) and Dale (Reilly), two men who are forced to live together as brothers. Richard Jenkins, Mary Steenburgen, Adam Scott and Kathryn Hahn also star.