Scott MacDonald  (born September 29 1959) is an American actor . He is best known for his recurring roles as Captain Manning on short-lived series Threshold , Burley from HBO  series CarnivĂ le Star Trek: Enterprise Jack Frost Dexter .
He grew up in Libby, Montana  and graduated from Washington State University  and received an MFA in acting /theatre  from the California Institute of the Arts . He has also done stage  acting, including on Broadway .
Fire in the Sky Last Action Hero  (1993) ... BernieA Rats Tale  (1996) ... as Rudi Rake-Rat (voice)Jack Frost William Psychspeare's The Taming of the Shrink  (1998) ... as BulbisThe Rat Pack Babylon 5: A Call to Arms Bad City Blues  (1999) ... as MackSeven Girlfriends Fight Club  (1999) ... Sgt. StevensonJack Frost 2: Revenge of the Mutant Killer Snowman Straight Into Darkness  (2004) ... as DemingJarhead American Crude  (2008) ... as Mr. SnowChanging Hands Open 24 Hours  (2010) ... as Frank (short)Water for Elephants The Big Bad City  (2012) ... as SteveGhostbusters  (2016) as cameo"Jack Frost The Last Coming" (2017)...voiced Jack Frost Star Trek: The Next Generation Law & Order  1 episodeStar Trek: Voyager Star Trek: Deep Space Nine Space: Above and Beyond Frasier Kindred: The Embraced NYPD Blue Conan Chicago Hope Charmed The X-Files Salvage Family Law  1 episodeThe Practice CSI: Crime Scene Investigation Crossing Jordan Stargate SG-1 The Lyon's Den The District NCIS Star Trek: Enterprise The West Wing Carnivale  14 episodes as BurleyJAG Threshold Boston Legal Numb3rs  1 episodeDexter Love American Style "ER  2 episodesMonk Without a Trace Regular Show Harry's Law United States of Tara Assassin's Creed II Final Fantasy XIII Jack Frost: A Very Deadly Christmas L.A. Noire Mafia III Marvel: Ultimate Alliance Red Faction 2 Star Wars: The Old Republic The Elder Scrolls V: Skyrim X-Men Legends X-Men Legends II: Rise of Apocalypse