thanks probably to a steady diet of "chiller theater", i've been fascinated by sociopaths for a long time. thankfully, most of them don't fall into the well-worn hollywood trope, i.e.; the hannibal-lecter-style genius super-predator.
however, unlike most real life homicidal maniacs, james holmes comes closer to the movie myth than most, since, unless he's suffered a recent drastic personality change into sociopathy, he has somehow managed to suppress his homicidal tendencies while advancing to a high degree of intellectual accomplishment.
but until his manifesto is found and/or holmes starts talking, this is all i'm ready to say about him. it is probably too early even to assume he's a sociopath.