PersonTerry O'Quinn21 credits in the catalogue: acting.On the wikisLostpediaActingHeaven's Gate1980Captain MinardiPlaces in the Heart1984Buddy KelseyAn Early Frost1985Dr. ReddingSilver Bullet1985Sheriff Joe HallerMischief1985Claude HarbroughSpaceCamp1986Launch DirectorThe Stepfather1987Jerry BlakeBlack Widow1987BruceYoung Guns1988Alex McSweenBlind Fury1989Frank DevereauxThe Rocketeer1991Howard HughesThe Cutting Edge1992Jack MoseleyTombstone1993Mayor ClumJAG1995Rear Admiral Thomas "CAG" Boone, USNPrimal Fear1996YancyMillennium1996Peter WattsGhosts of Mississippi1996Judge HilburnThe X-Files1998MichaudOld School2003Goldberg (uncredited)Lost2004John LockePatriot2015Tom Tavner