(written from a Production point of view)
Henry Woronicz (born 1954; age ~67) is an actor who played J'Dan in the Star Trek: The Next Generation fourth season episode "The Drumhead", and Forra Gegen in the Star Trek: Voyager third season episode "Distant Origin" and Quarren in the fourth season episode "Living Witness". His undersuit padding lot from "Distant Origin" was sold off on the It's A Wrap! sale and auction on eBay.  Woronicz filmed his scenes for the episode "The Drumhead" on Friday 22 February 1991 and Wednesday 27 February 1991 on Paramount Stage 9.
Woronicz has guest starred in television series such as Quantum Leap (1991, starring Scott Bakula and Dean Stockwell, and with Heidi Swedberg, Charles Emmett, and Frank Novak), Cheers (1991, starring Kirstie Alley and Kelsey Grammer and with Zachary Benjamin), Frasier (1996, starring Kelsey Grammer and with Dan Butler and Abdul Salaam El Razzac), Picket Fences (1996, starring Kelly Connell and Ray Walston, and with John Towey, Lisa Chess, Bernard Kates, and Caroline Lagerfelt), Ally McBeal (1998), Moesha (1997-1998), Seinfeld (1997 and 1998, starring Jason Alexander and guest starring Ursaline Bryant and Daniel Dae Kim in the latter episode), Law & Order (1999 and 2001, with Daniel Hugh Kelly in the previous episode), and Law & Order: Special Victims Unit (2002, with Bruce Davison).
Woronicz has also performed in the films When the Cradle Falls (1997, with Kellie Waymire), Looking for Lola (1998, with Armin Shimerman, Frank Kopyc, Brian George, and Diane and Elaine Klimaszewski), Primary Colors (1998, with Brian Markinson, John Vargas, Robert Symonds, Robert Easton, and Scott Burkholder), Living Out Loud (1998, with Jenette Goldstein, Gina Philips, Willie Garson, and Laura Jane Salvato), and Little Pieces (2000).
Between 1991 and 1995 he was the Artistic Director and a regular actor at the Oregon Shakespeare festival.