(written from a Production point of view)
He has appeared in many other popular television series such as Dexter, Mad Men, Grey's Anatomy, Murder, She Wrote, Diagnosis Murder, JAG, Sliders (starring Jerry O'Connell), CSI: NY and NYPD Blue. He also appeared in two episodes of Beauty and the Beast, a series which starred Ron Perlman and Armin Shimerman.
In 1983, he received a Golden Globe nomination for his supporting role in the 1982 film Tex co-starring Tom Virtue. He went on to play James Huntoon in the 1985 mini-series North and South and its 1986 continuation, North and South, Book II. Other Trek alumni who appear in this series include Jonathan Frakes, Kirstie Alley, Leon Rippy, William Schallert, Jean Simmons, Kurtwood Smith, David Ogden Stiers, and Anthony Zerbe. In 1987, he co-starred with William Daniels and John Rhys-Davies in the TV movie The Little Match Girl.
He also co-starred with future Star Trek: Voyager actor Robert Picardo in the quirky 1989 horror movie 976-EVIL, which also featured Paul Willson. In 1992, Metzler co-starred wth Star Trek: The Next Generation actress Marina Sirtis in Waxwork II: Lost in Time, also co-starring Zach Galligan.
His other motion picture credits include Squeeze Play (1980, with Jennifer Hetrick), Four Friends (1981, with Craig Wasson, David Graf, Elizabeth Goldstein, and Natalia Nogulich), Tex (1982, with Tom Virtue), River's Edge (1986, with Daniel Roebuck), Hot to Trot (1988, with Virginia Madsen, Donald Hotton, George D. Wallace, Robert Towers, and Vyto Ruginis), Old Gringo (1989, with Paul Williams), Circuitry Man (1990, with Dennis Christopher, Barbara Alyn Woods, and Paul Willson), Delusion (1991, with Robert Costanzo and Rudolph Willrich), One False Move (1992, with Earl Billings and Jennifer Watson-Johnston), Children of the Corn III: Urban Harvest (1995, with Michael Ensign), Cadillac Ranch (1996, with Christopher Lloyd), L.A. Confidential (1997, with James Cromwell and Steve Rankin) and The United States of Leland (2003, with Michael Welch, Ron Canada, and Matt Malloy).