Gillian Anderson, best known to American audiences as Agent Dana Scully of the F.B.I., from the Fox television show “The X-Files,” will be one of the new hosts of “Masterpiece Theater” on PBS when it begins its new season on Jan. 13, the program’s producers plan to announce today. Naming Ms. Anderson as a host is part of a broad overhaul of the look and scheduling of “Masterpiece Theater,” now 37 years old, intended to bring in more viewers by getting rid of some of the packaging that Rebecca Eaton, the program’s executive producer, said was beg ... [Continua a leggere]