Just as when I saw THE THING for the first time, I was horrified, grossed out, and totally enamored with David Cronenberg's THE FLY.  I loved how the creation of the "Telepods" were taken for granted and that we realize that this genius scientist worked for years and years before we first meet him at the cocktail party in the beginning of the film.  Jeff Goldblum's deterioration throughout this film is a marvel of makeup and atmosphere.  The various levels of his decay are definitely the things nightmares are formed around.  Not only that, but the themes that Cronenberg brings up in this film (jealousy, abortion, journalistic responsibility, empathy) are all poignant and not at all forced.  Loved this film!!