“Concussion” is far from being a perfect movie, but it has an intriguing story to tell and just the right actor to bring it to life: Will Smith. Smith, like you’ve never seen him before, plays Dr. Bennet Omalu, a forensic neuropathologist who uncovers the shocking truth about brain damage in American football. While the story couldn’t be more relevant and thought provoking, director Peter Landesman made me lose interest at one point. It can’t be the casting, which is spot on: Will Smith is more than ideal in the lead role, and you couldn’t ask for a better supporting cast, which features Alec Baldwin and David Morse. But when all was said and done, it was difficult for me to stay connected to the people onscreen and their cause. Too bad. Would I still recommend the film? Of course. Smith’s terrific performance is worth the price of admission alone. But I was still hoping for a better result and unfortunately I didn’t get that.