After starring in a string of shlocky flicks (Maid in Manhattan! Enough!), Jennifer Lopez is getting serious about her film career. The actress-singer is in final talks to headline the big-screen drama An Unfinished Life, to be directed by Cider House Rules helmer Lasse Hallstrom. J.Lo would play a young single mother who is forced to move in with her estranged father-in-law.