Sony Pictures Classics' mature romance "Love Is Strange," the second Sundance opener in a row to dominate the specialty box office, did sizable initial business in New York and Los Angeles. With an appeal to older audiences, both straight and gay, it looks positioned for future success in a market otherwise crammed with longer-running, underperforming and/or Video on Demand titles. The other big achievement this weekend is the continued success of "Boyhood" (IFC), which continues to hold well in over 700 theaters.