I guess I raved about that "2001" score elsewhere, but it's true it is a masterpiece - a piece of film music that is better than most symphonies. And it was rejected by Kubrick. That should be an inspiration to any musician who ever felt ignored or mistreated.
I also agree about Elfman who is one of the few of the newer bunch of film composers who has done something significantly different from Williams - especially in his humorous, ironic, Satie-like approach. Probably in his case, I do think it is some kind of genius that has allowed him to go beyond his lack of formal training since that is apparently the case.
But Dave (happy birthday!) has a good point about the lack of serious study among composers who do nothing but pop stuff then make a lot of money and presto-chango! You're a film composer! Not in my book. You're one if you are as expert as Herrmann as a conductor/orchestrator/ melodist, as experienced in the use of symphonic development and the leitmotif (attention, Dietz) as Korngold and Steiner, and as original in the invention of themes as Raksin, de la Rue, Rosza, Newman, Waxman, Tiomkin not to mention Jerry Goldsmith. In other words, though there is a pop aspect to it, film music has truly evolved into an art and is far more than the the flash-in-the-pan mentality it is often viewed with.
Unfortunately as I noted elsewhere so much of it is stuck to god-awful films. Sorry Evan, but I would not touch that Peter Pan turkey with a ten foot baster. If only composers could generate their own movies to their own scores (my approach, but never mind that - it tends to produce schizoid delusions in its practitioners).