The competition among TV networks, movie studios and A-list stars can be fierce, but the fight against cancer will unite them on Sept. 5. Halle Berry, Jack Black, Sheryl Crow, Ellen DeGeneres, Jennifer Garner and Carrie Underwood are among the more than 60 celebrities will participate in Stand Up to Cancer, a live fund- and awareness-raising television special that will air simultaneously on ABC, NBC and CBS. More Celebrity news More Entertainment news