I thought the actor who played John Locke was very good, convincing, and Terry O'Quinn was a great supporting TV/movie role actor going back decades to Star Trek: TNG, he played multiple characters in several stand-alone X-Files episodes, in Lost, he played a great "mentor-philosopher" role. He's an actor I'm glad finally got his time in the sun with something resembling that role of a lifetime that epitomizes and defines an actor/actress decades after their gone like Bryan Cranston (Walter White), Heath Ledger (Dark Knight's Joker), Lucy Lawless (Xena), David Duchovny and Gillian Anderson (X-Files' Mulder and Scully).