A Christianity Today blog entry describes the Virginia Tech shooter as someone who left behind his family's Christian faith: 

McClatchy reporters talked with Young-Hwan Kim, president of the school's Korean Campus Crusade for Christ chapter. "No one knew him," Kim said. "We had no contact throughout four years. It's amazing. We could not reach out to him." It wasn't for lack of trying, Kim said.  Members of Korean Campus Crusade repeatedly invited him to meetings, he said, but Cho wouldn't even provide personal contact information.

New York Times op-ed writer David Brooks on the cognitive science of evil:

We’re never going back. We’re not going to put our knowledge of brain chemistry or evolutionary psychology back in the bottle. It would be madness to think Cho Seung-Hui could have been saved from his demons with better sermons.