Any day now, 2008’s biggest blockbuster The Dark Knight will be topping $1 billion worldwide. Warner Bros tells me that it’s already reached $997.5 ($528.5 million domestically and $469 million internationally) since its North American release on July 18th. It’s already the 2nd highest domestic grossing pic of all time behind only the $600.8 million domestic haul of 1997/1998’s Titanic. And it’s the 4th highest worldwide grossing pic behind #1 Paramount/Fox’s Titanic ($1.8B), #2 New Line’s The Lord of the Rings 3: The Return of the King ($1.1B), and #3 Disney’s Pirates of the Caribbean 2: Dead Man’s Chest ($1.0B). (None of these rankings are adjusted for inflation or ticket prices.)