"Arthur" (PG-13, 110 minutes). A fairly close remake of the great 1981 Disney Moore movie, with some pleasures of its own. Russell Brand plays the permanently drunk zillionaire, Helen Mirren is his nanny (still on the job), and Greta Gerwig is the poor girl he falls in love with. That complicates the plans of his mother (Geraldine James), to arrange a marriage with a rich girl (Jennifer Garner).