Greg Proops in...
Star Wars: Episode I - Racer (1999) (VG) (voice) .... Beed Annodue/Green Announcer
When I saw this movie, I didnt realize that Greg was in it, so I didnt listen for him. Its just a voice over, so I doubt it would be worth it to watch the movie only to see him.
Unforgettable (1993) .... Himself
Havent seen it
Nightmare Before Christmas, The (1993) (voice) (as Gregory Proops) .... Harlequin Demon, Devil, Sax Player
Again, its just a voice over. I had a hard time recognizing him.
Thanksgiving Day (1990) (TV) .... Chauffeur
Havent seen it.
Pandemonium (1988) (uncredited) .... Voice-Over
Havent seen it.
West Is West (1987)
Havent seen it.