"Concussion" is a 2015 biographical sports drama directed by Peter Landesman, starring Will Smith as Dr. Bennet Omalu, a Nigerian-American forensic pathologist who discovers Chronic Traumatic Encephalopathy (CTE) in the brains of deceased NFL players. The film follows Omalu's relentless pursuit to bring awareness to the dangers of repeated head trauma in football, despite facing significant opposition from the NFL. With strong performances from Alec Baldwin, Gugu Mbatha-Raw, and Albert Brooks, "Concussion" sheds light on the intersection of sports, science, and corporate interests.