The network announced Tuesday that Leno will host a show five nights a week at 10 p.m. Eastern, after he leaves the "Tonight" show next year. The network had announced nearly five years ago that Conan O'Brien would move to "Tonight" and succeed Leno.The deal not only prevents Leno from moving to another network and competing with O'Brien, it also has the potential to be a big cost savings for NBC. A talk show is considerably cheaper to produce than the dramas that usually air at 10 p.m. Eastern.
