(written from a Production point of view)
Glenn Neufeld was a Visual Effects Supervisor on Star Trek: Deep Space Nine during the show's first four seasons.
Neufeld and his effects crew were nominated for two Emmy Awards for "Outstanding Individual Achievement in Special Visual Effects" for DS9. The episodes for which they were nominated were "The Jem'Hadar" and "The Way of the Warrior".
Before his time on DS9, Neufeld fulfilled several duties on a number of feature films. He was a production assistant, still photographer, property master and assistant art director on the low-budget 1983 horror movie, Frightmare. This film featured Star Trek veterans Jeffrey Combs and Scott Thomson in the cast. Neufeld then served as production assistant in the 1985 adventure film The Aviator and even had a supporting role in the film.
Neufeld is credited as Associate Producer for the films Transylvania 6-5000 (starring Ed Begley, Jr.) and No Way Out (starring Iman). He was also an assistant post-production supervisor on the latter film. Afterward, Neufeld joined the company Video Image, during which time he worked on films like The Hunt for Red October (featuring Gates McFadden) and Batman Returns.
While working on DS9, Neufeld took time off from the series to work as Visual Effects Supervisor on the 1996 comedy Jingle All the Way for 20th Century Fox. Since leaving DS9, Neufeld has contributed or supervised visual effects work for such Paramount Pictures releases as The General's Daughter (starring James Cromwell and Clarence Williams III), The Sum of All Fears (featuring James Cromwell and Bruce McGill), and The Core (starring Bruce Greenwood and Alfre Woodard).
Most recently, Neufeld was the vfx supervisor on the 2007 fantasy film Mr. Magoriam's Wonder Emporium, released by 20th Century Fox.