A thoroughly conventional movie with an exceptional cast that features what seems to be the core of writer-director David O. Russell's stock company, Jennifer Lawrence and Bradley Cooper, Joy is the kind of feel-good underdog-against-the-odds movie with screwball touches that could have been made at almost any time in Hollywood history. I can easily imagine it in the 1940s with Rosalind Russell and Fred MacMurray, for example. Joy Mangano (Lawrence) was a brilliant student in high school, but she didn't go on to college, and now struggles to make ends meet, while dabbling with ideas for inventions. A divorcee, she lives in an unusual household: In addition to her two children and her grandmother (Diane Ladd), the ménage also includes Joy's mother (Virginia Madsen), who spends her days in bed watching soap operas, and Joy's ex-husband (Edgar Ramirez), who lives in the basement. Joy's father (Robert De Niro) also joins the household after splitting from his latest wife, but he soon takes up with Trudy, a wealthy widow (Isabella Rossellini). When Joy comes up with the idea for a self-wringing mop, Trudy agrees to help finance it. Joy has to contract the manufacture of some of the mop's parts, and she struggles to market it until the idea comes to sell it on TV. She approaches the QVC shopping channel, where an executive, Neil Walker (Cooper), takes an interest in the product. It becomes a big seller, but then the company Joy contracted to make the parts claims ownership of the design. Facing bankruptcy, Joy fights the claim, wins, and becomes a huge success, marketing other household products. There's a real-life Joy Mangano on whose story the film is based, with the usual disregard for accuracy. Lawrence got an Oscar nomination for her performance, which is, as always, wonderful. She gives the film more than it deserves, and the supporting cast measures up to her. But there are few surprises in the story or in Russell's treatment of it, unlike his previous films with Lawrence and Cooper, Silver Linings Playbook (2012) and American Hustle (2013).