I love the movie "The Pursuit of Happyness." It's a movie based on a true story staring Will Smith who plays investment stategist extraordinnaire Chris Gardner whose well-documented struggle to become a world renoun bond trader included being a homeless single dad with a young son.
Smith played the role extremely well. The scene below is about Gardner (Smith) telling his son not to have hopes about being a professional basketball player. Gardner quickly realizes his mistake in discouraging his son, and gives one of the most inspirational speaches in recent movie history.
The Theme? "Don't ever let anyone tell you you Can't do something!" Enjoy!