5. Andrew Gold, 'Lonely Boy' in 'Boogie Nights' (1998)
One of the most unbelievably sad moments ever captured on film, as P.T. Anderson takes a harmless bit of Seventies soft-rock fluff and turns it into a heartbreaking requiem for basically everybody in the movie, if not America in general. It’s a druggy L.A. pool party at Burt Reynolds' mansion, in the coked-out stupor of the Seventies. All the porn stars are there to make the scene: Julianne Moore, Mark Wahlberg, Don Cheadle, Luis Guzman (former president of the Greendale ceramics club). The phone rings in the kitchen – just some kid looking for somebody who isn't there. You realize how completely doomed all these party people are, and how savagely they are going to break the hearts of everybody they ever touch. Oh, what a lonely boy.