(written from a Production point of view)
Mark Chaet (born 19 May 1950; age 73) is an actor who played Yolen in the Star Trek: Enterprise second season episode "The Breach".
Among his acting resume are films such as The Haunted (1991, with Stephen Markle and Parker Whitman), Letter to my Killer (1995, with Dey Young, Lisa Lord, Joyce McNeal, Don Pugsley, and stunts by J. Suzanne Rampe, Bob Minor, and Robert Herron), Liar Liar (1997, with Anne Haney, Mitchell Ryan, Chip Mayer, Eric Pierpoint, Ben Lemon, Stephen James Carver, Ernest Perry, Jr., Amanda Carlin, Eric Sharp, stand-in Kerry Hoyt, and stunts by Simone Boisseree, Rosine "Ace" Hatem, Robert Herron, Spice Williams, and Gene LeBell), Storm (1999, with Christopher Michael), Van Wilder (2002, with Megan Gallagher, J. Patrick McCormack, and Greg Daniel), House of Sand and Fog (2003, with Al Rodrigo, Bonita Friedericy, Marco Rodriguez, and Spencer Garrett), and Outta Sync (2006).
He has also appeared in television series such as Matlock (1989, with Brooke Bundy, David Froman, Danny Goldring, and Jason Wingreen), L.A. Law (1994, with Corbin Bernsen, Larry Drake, Scott Jaeck, Kenneth Mars, Armin Shimerman, and Kate Vernon), Chicago Hope (1997, with Fran Bennett, Seymour Cassel, and Rosie Malek-Yonan), V.I.P. (1998, with Patrick Kilpatrick and Eric Steinberg), The X-Files (2000), Scrubs (2001, with Ken Jenkins), ER (2002, with Lily Mariye, Time Winters, Scott Burkholder, Ruth Williamson, and The Breach co-star Laura Putney), The West Wing (2003, with Thomas Kopache, Timothy Davis-Reed, and John Cothran, Jr.), The District (2002-2003), Two and a Half Men (2005), Veronica Mars (2007), and Boston Legal.
Chaet has also worked as a casting associate for films such as Dolly Dearest (1992, starring Denise Crosby and Chris Demetral) and Street Corner Justice (1996, with Clint Howard).