“Rachel Getting Married” (R, 113 minutes): The bravura way director Jonathan Demme juggles the hurly-burly of an upscale wedding — made hurlier and burlier by the arrival, straight from rehab, of the title character’s (Rosemarie DeWitt) high-maintenance sister Kym (Anne Hathaway, like you’ve never seen her) — harks back to the darkness and emotional complexity of “The Silence of the Lambs,” and the madcap energy of “Something Wild.” There’s a dark secret, too, but its lurking presence never feels cheap or forced. There’s something very recognizable, very true about the way it has percolated up through the psyches of Rachel, a psychologist; her ringmaster father (former clown Bill Irwin); and her emotionally remote mother (Debra Winger), manifesting itself in personalities that feel fully fleshed, if damaged in different ways. Or, in the case of Kym, the way it explodes with the force of a still-active volcano. That’s natural also, and all too human. Contains strong language and a brief sex scene. DVD Extras: Commentary with producer Neda Armian, screenwriter Jenny Lumet and editor Tim Squyres; commentary with Rosemarei DeWitt; deleted scenes; featurettes.