(written from a Production point of view)
For the Voyager episode "Revulsion", he filmed his scenes between Monday 14 July 1997 and Thursday 17 July 1997 and on second unit on Thursday 21 August 1997 on Paramount Stage 16. His costume from this episode was later sold off on the It's A Wrap! sale and auction on eBay.  His costume from the episode "The Die is Cast" was also sold off. 
Orser has also appeared in several other films such as Seven, Saving Private Ryan, Pearl Harbor (with Randy Oglesby and Raphael Sbarge), Daredevil (with Erick Avari and Jude Ciccolella), Confidence (with Tommy "Tiny" Lister, Jr.) and Alien: Resurrection (with Winona Ryder, Raymond Cruz, Ron Perlman and Brad Dourif). He also had a recurring role on ER as Dr. Lucien Dubenko. Most recently he has appeared in all three of the Taken film series as Sam Gilroy. He guest starred in a season 7 episode of the Golden Girls, 'The Case of The Libertine Belle' (With Nicholas Kepros, Zach Grenier, and Tony Plana).