The Dark Knight is now the third highest-grossing movie domestically of all time, which means that fanboys and journalists are beginning to think it's truly possible that it might make more than Titanic 's record $600 million in domestic box-office receipts. "No way," says The Hollywood Reporter . And even Warner Bros. is starting to get cold feet, with distribution prez Dan Fellman insisting the film probably won't make as much as Paramount's shipwreck love story. But he'd be delighted if moviegoers proved him wrong. THR : Warner Bros.' Batman blockbuster "The Dark Knight" has soared to an incredible $441.6 million domestically and $263.5 million internationally through just its first four weekends. It's been a boxoffice burst of such unprecedented proportions as to outpace even "Titanic" over a comparable period, stoking speculation of whether the "Titanic" record would finally run into an iceberg. Yet the theatrical waters have changed dramatically during the past decade thanks to the rise of the megaplex -- allowing double- and triple-screen showings of films in single venues -- and the onset of supersaturation releasing in 4,000 or more theaters. "Dark Knight" and other major releases now ring up mind-bending sums over their first couple weekends, with "Dark Knight" grossing a record $313.8 million domestically through its first 10 days. That makes it something of an apples-and-oranges comparison in trying to project whether ...