(written from a Production point of view)
Jeffrey S. Jensen (also known as Jeff Jensen) is a stuntman, stunt actor, stunt coordinator, and second unit director who performed stunts in Star Trek III: The Search for Spock (as Jeff Jensen), Star Trek VI: The Undiscovered Country, and Star Trek: Insurrection. In Star Trek III: The Search for Spock, he performed stunts for Douglas Alan Shanklin (Starfleet prison guard).
He has doubled for actors such as Dolph Lundgren, Sean Connery, and John Candy.
Among his stunt resume are films such as Lone Wolf McQuade (1983, with Robert Beltran, John Anderson, and stunts by Kane Hodder, Simone Boisseree, Al Jones, and Gary Wayton), Commando (1985), The Untouchables (1987, with stunts by Eddy Donno, Gary Epper, Robert Herron, and Ted Barba), The Running Man (1987, with Roy Brocksmith and Tony Brubaker), Rambo III (1989), Indiana Jones and the Last Crusade (1989, with John Rhys-Davies, Vince Deadrick, and stunts by Freddie Hice, Hubie Kerns, Jr., and Steve Kelso), Glory (1989), Total Recall (1990, with Ronny Cox, Michael Champion, Lycia Naff, Ken Gilden, Erik Cord, Frank Kopyc, Milt Tarver, Robert Picardo, and stunts by Gary Baxley, Simone Boisseree, Tony Brubaker, Ann Chatterton, Doug Coleman, Vince Deadrick, Jr., Nick Dimitri, Dana Dru Evenson, Gene LeBell, Cherie Tash, Gary Wayton, and George Wilbur), RoboCop 2 (1990), Universal Soldier (1992, with Ed O'Ross, Leon Rippy, Lilyan Chauvin, Tanner Gill, Jophery C. Brown, Eddie Braun, Joel Kramer, Mirron E. Willis, John DeMita, and stunts by B.J. Davis, Dana Dru Evenson, Vince Deadrick, Jr., Hubie Kerns, and Peewee Piemonte), Under Siege (1992), The Flintstones (1994), Speed (1994, with Alan Ruck and stunts by Patricia Tallman), The Arrival (1996), BitterSweet (1999), and O Brother, Where Art Thou? (2000, with Frank Collison, Stephen Root, Musetta Vander, and stunts by Danny Downey).
Jensen has also appeared in television series such as Falcon Crest (1983, with Robert Foxworth, Chuck Hicks, and Branscombe Richmond), Knight Rider (1984, with Patricia McPherson, Joel Kramer, Spike Silver, and Rick Avery), Magnum, P.I. (1986, with Clyde Kusatsu and Vince Deadrick), and Walker, Texas Ranger (starring Noble Willingham).
As a second unit director he has worked for films such as Rambo III (1988), The Indian Runner (1991), Subdown (1997), and The Watcher (2000). He directed and wrote the films Fallacy (2004, with John Savage and Cary-Hiroyuki Tagawa) and Velocity (2007).