SERIES PREMIERE:  Alec Baldwin, who has hosted seasons of The Essentials on Turner Classic Movies, as well as his own podcasts, jumps into the talk show fray – but unlike most actors and others trying out the form, and shifting from interviewee to interviewer, is doing it on broadcast TV, and in prime time. His opening guests, with whom he speaks one at a time, are both actors: Robert De Niro, who directed and co-starred with Baldwin in 2006’s The Good Shepherd, and Taraji P. Henson, who has not, I don’t think, acted opposite Baldwin yet, even when she guest hosted Saturday Night Live.