Here is a TED talk he has given:
And here is another interesting, more recent talk by James Fallon.
And here is an NPR profile of James Fallon.
Fallon has many ancestors who were mad killers, including the notorious Lizzie Bordon:
Lizzie Borden took an axeFrom Reason TV:
And gave her mother forty whacks.
When she saw what she had done
She gave her father forty-one.
And here is a talk by James Fallon at the Oslo Freedom Forum 2011:
In this video James Fallon talks of Robert Hare's famous PCL-R (Psychopathy Checklist)