Westsiders have one less reason to cross the 405. ArcLight Cinemas is opening its fourth theater, ArcLight Beach Cities, in El Segundo. The theater, which hosted a press preview last week and opens to the public tomorrow, promises the standard ArcLight cafes and bars, projection quality, seat reservation, programs for film lovers, and—most important of all—their signature caramel popcorn. So Megamind 3D or Due Date? You can purchase tickets here.