Halle Berry is heading to the small screen. The Oscar winner has been tapped to star in Steven Spielberg's CBS summer drama Extant and signed a two-year first-look production deal with the series' studio, CBS Television Studio. The project found itself at the center of a heated bidding war between broadcast networks and cable networks, with CBS ultimately proving triumphant by committing to a 13-episode straight-to-series order. Extant has been billed as a futuristic thriller about a female astronaut ( Berry ) trying to reconnect with her family when she returns after a year in outer space. The character's experiences lead to events that ultimately change the course of human history. The casting coup of Berry is as much a commentary on the strength of the spec script as it is on the state of the film business, particularly for actresses over 40. "Halle is the type of award-winning actress you dream of collaborating with for an event project such as Extant,&q