This James Holmes planned carefully his attack on the Aurora, CO movie theater. Granted he probably had some kind of psychiatric problem in the past because of the statement from his mother that they got the right person. His mother is a psychiatric nurse so she should know.

Holmes was a brilliant science student who was easy-going with others.

I do not see some kind of Son of Sam nutjob (talking to dogs) here but someone who wanted to spread as much death and destruction as possible in as little time as he could do it.

This looks more like a suicide bomber type crazy. Someone with a cause that they were willing to die for. Have no idea what his cause could be except to gain infamy and spread chaos. Just a sick freak making a point through guns and bombs. Not sick in terms of mental wiring but sick in terms of being a sociopath.