The short version:
Hans Zimmer and Graham Preskett—The Da Vinci Code: 6/10Hans Zimmer and James Newton Howard—Batman Begins: 7/10
Hans Zimmer and James Newton Howard—The Dark Knight: 7/10
Bear McCreary—SOCOM 4: 7/10
Bear McCreary—Zom-B Movie: 2/10
I've been listening to a lot of soundtracks and instrumental music recently. It takes me a little while longer to get through them since the music necessarily falls into the background when I'm listening—some of these I've been going through for like half a year.
Hans Zimmer and Graham Preskett's score for The Da Vinci Code is decent. There are several really atmospheric pieces, and quite a lot of use of choirs, so if choirs are your thing, then this would probably be a good CD for you. I particularly like Fructus Gravis, Malleus Maleficarum, and Rose of Arimathea.
Hans Zimmer and James Newton Howard's scores for Batman Begins and The Dark Knight are also pretty good, with the second movie's soundtrack being a little darker and weirder than that of the first movie, which had a little bit more of a traditional orchestral action movie soundtrack. From Batman Begins I like Eptesicus, Antrozous, and Molossus. From The Dark Knight I like Like a Dog Chasing Cars, Why So Serious?, and I'm Not a Hero.
Bear McCreary's soundtrack to the game SOCOM 4 is also pretty good. It's similar to the most Asian-y parts of the Battlestar Galactica soundtracks. It's a two-disc set, and plenty of the material is not particularly fantastic, but if the best tracks were chosen for a single-disc release you'd have a pretty killer CD, and I think it would probably have Clawhammer's Betrayal, Battle for Control, and Theme from SOCOM 4 on it.
His soundtrack to Zom-B Movie is terrible. I'm pretty sure it's supposed to be terrible, given the name. Everything about the packaging suggests to you "this CD is going to be terrible; you should not buy this." I love Bear McCreary and even so I didn't want to buy it, but I entered a contest for a signed CD and I won it. I guess I got what I paid for. Cecil and Orson is decent, and Chillerama Main Title / Floyd's Bean Bag, and Ryan to the Rescue are okay. Most of the rest is barely listenable. I can't even find it online now... that's not encouraging.