Once in a rare while, a television series does more than generate top ratings and viewership for a television network; sometimes it also inspires a new course that sets the tone for the network's entire lineup of original series. In Paramount Network's case, Yellowstone is that series. The series launched two summers ago as a contemporary Western with Kevin Costner (pictured at top, right, with co-star Luke Grimes) presiding over a sprawling Montana cattle ranch, bordered in part by Yellowstone National Park. This past summer,Yellowstone became the former Spike TV's top-rated series and one of the most viewed on a weekly basis among both cable and broadcast networks. In fact, network representatives cite Yellowstone as the most-watched scripted series presented on any channel operated by parent Viacom in the past decade.