Actor · DirectorMichael EmersonSeptember 7, 1954(69 years old)Cedar Rapids, Iowa, USAMichael Emerson (born September 7, 1954) is an American actor best known for his role as Benjamin Linus on Lost as well as fictional serial killer William Hinks in The Practice.SocialsTwitterFacebookIMDbKnown forPerson of InterestHarold FinchLostBenjamin Linus / Benjamin LinusArrowCayden JamesSawZep HindleThe X-FilesOliver MartinBatman: The Dark Knight Returns, Part 1Joker (voice)Law & Order: Special Victims UnitAllan ShayeBatman: The Dark Knight Returns, Part 2Joker (voice)EvilDr Leland TownsendUnfaithfulJoshThe Legend of ZorroHarriganLaw & Order: Criminal IntentGerry Rankin