When the sixth and final season of Downton Abbey premieres on Jan. 3 in the U.S., marking the bittersweet end of an era, I know I won’t be the only one sobbing for months afterward. What could have been a totally boring period piece about a stuffy…

Step aside, Mr. Darcy, there’s a new resident period-drama hottie in town. Brooding, roguish, and undeniably handsome, Ross Poldark, the lead character in the hit miniseries Poldark , is a Revolutionary War veteran with a reputation for being a…