Recently renewed historical drama averages 9.8 million viewers with Season 4 ender
Critics call the British premiere "a glowing success" with Julian Fellowes' writing at his best
Watch Mandela from his first TV interview through one celebrating his 90th birthday
Thinkfactory is latest U.S. production company to become part of ITV
Joined ITV in 2005
Eight new "Downton Abbey" episodes plus a Christmas special will begin filming in February
Maggie Smith has reportedly told "Downton Abbey" creator Julian Fellowes that she wants the third season to be her last on the show
The first of 26 episodes will debut Sunday, Oct. 3
Hourlong show will feature interviews with Boyle, Cowell, as well as performances.
Forget "Brideshead," What we excel at are ghastly reality shows.