Million dollar lawsuits, suicides and more have shone a bright light on CTE and the effects of head trauma sustained from playing football, more specifically in the NFL.  In “Concussion”, Will Smith takes the NFL head on (pun intended), playing the role of Dr. Bennet Omalu, the forensic pathologist and neuropathologist who discovered chronic traumatic encephalopathy in football players who got hit in the head over and over again.