Watch Step Brothers (2008) Full Movie Online Free Brennan Huff and Dale Doback are both about 40 when Brennan's mom and Dale's dad marry. The sons still live with the parents so they must now share a room. Initial antipathy threatens the household's peace and the parents' relationship. Will Ferrell ... Brennan Huff John C. Reilly ... Dale Doback Mary Steenburgen ... Nancy Huff Richard Jenkins ... Dr. Robert Doback Adam Scott ... Derek Kathryn Hahn ... Alice Andrea Savage ... Denise Lurie Poston ... Tommy Elizabeth Yozamp ... Tiffany Logan Manus ... Chris Gardoki Travis T. Flory ... Redheaded Kid (as Travis Flory) Lili Rose McKay ... 7-year-old Girl (as Lili McKay) Shira Piven ... Nurse Seth Morris ... Doctor Wayne Federman ... Blind Man