Oppenheimer” and 89% and 8.2/10 for “Barbie“), Hollywood is looking at a skewed rerun of another box office showdown from July 2008.Fifteen years ago, Christopher Nolan’s “The Dark Knight” broke the opening weekend record with $158 million, but Meryl Streep’s “Mamma Mia!” also nabbed what was at the time the largest Friday-Sunday debut ever ($28 million) against a $100 million-plus opener. History may be repeating itself, with Greta Gerwig’s “Barbie” looking to clear triple digits right as Nolan’s “Oppenheimer” hopes to open on par with the over/under $50 million launches of “Interstellar” and “Dunkirk.” The record set in 2008 against a Nolan epic may be set again this weekend *by* a Nolan epic.