In Loverboy, a possessive single mom clings desperately, adoringly, to her son and their homeschooled world of fairy tales and Thoreau-like nature adventures. EXTRAS Kevin Bacon’s director’s commentary covers nepotism and his two degrees of casting (brother Michael wrote the score; wife Sedgwick stars; daughter Sosie plays Mom in flashback; pal Campbell Scott cameos). As for how he got A-listers (Sandra Bullock, Matt Dillon, John Legend) for bit parts? ”I got so lucky,” he says. His tip for shooting on a shoestring: Use stock footage to create locations.