AUGUST RUSH
There's a scene in the tear-jerker August Rush in which the titular musical prodigy (Freddie Highmore) and a friendly Irish rocker (Jonathan Rhys Meyers) - unaware that they're father and son - engage in a happy bit of dueling guitars in Central Park, their matching grins widening as the improvised strumming reaches its climax. It's a great moment, and I mention it because it's the only one in the film that I didn't find excruciating.