Step Brothers (2008, U.S.A.)

Will Ferrell co-writes and stars in this comedy about two losers who become step-brothers.  Brennan Huff (Ferrell) and Dale Doback (John C. Reilly) are mature men – by age only – who still live at home.  However, Brennan’s mother Nancy (Mary Steenburgen) marries Dale’s father Robert (Richard Jenkins) so the two now find themselves living together. After taking an initial dislike to one another, they eventually become united in their hatred of Brennan’s successful but mean older brother Derek (Adam Scott), and come up with ever more elaborate schemes to knock him off his perch.