This is a great movie about a mathematical genius, with the intellect to solve any problems, except the ones in his past. Even though the ending is fairly predictable, the performances by the lead actors are superb. Hollywood just doesn't make enough of these kinds of original, heartfelt, but entertaining films. Most parents will be able to watch this with their teens. There is some violence, foul language and drinking, but this is the reality for many young men living and working in South Boston. This one is definitely a must see movie.