If you're looking to be touched, warmed and uplifted by a movie these days, don't go to the multiplex. You know this already, of course. Instead, make sure you live in a city where they host a film festival, where you might run into something as special as Dave McLaughlin's On Broadway, which premiered this weekend at the Independent Film Festival of Boston. It's the story of blue-collar Jack O'Toole (played by, yes, that Joseph......