Brad not a sociopath? hmmm - I think that there are a LOT of his personality traits listed here and we could pretty easily map many instances of these to each bullet point.
Here is a list of ways to identify a sociopath. This list is from "Profile of a Sociopath". Is is a pretty good list of sociopathic indicators.
* Glibness/Superficial Charm
* Manipulative and Conning
* Grandiose Sense of Self
* Pathological Lying
* Lack of Remorse, Shame or Guilt
* Shallow Emotions
* Incapacity for Love
* Need for Stimulation
* Callousness/Lack of Empathy
* Poor Behavioral Controls/Impulsive Nature
* Early Behavior Problems/Juvenile Delinquency
* Irresponsibility/Unreliability
* Promiscuous Sexual Behavior/Infidelity
* Lack of Realistic Life Plan/Parasitic Lifestyle
* Criminal or Entrepreneurial Versatility
* Contemptuous of those who seek to understand them
* Does not perceive that anything is wrong with them
* Authoritarian
* Secretive
* Paranoid
* Only rarely in difficulty with the law, but seeks out situations where their tyrannical behavior will be tolerated, condoned, or admired
* Conventional appearance
* Goal of enslavement of their victim(s)
* Exercises despotic control over every aspect of the victim's life
* Has an emotional need to justify their crimes and therefore needs their victim's affirmation (respect, gratitude and love)
* Ultimate goal is the creation of a willing victim
* Incapable of real human attachment to another
* Unable to feel remorse or guilt
* Narcissism, grandiosity (self-importance not based on achievements)
* May state readily that their goal is to rule the world
http://wiki.answers.com/Q/How_do_you_know_if_someone_is_a_sociopath