Warner Bros. Pictures’ The Dark Knight earned an estimated $75.6 million from 4,366 theaters in its second weekend, surpassing Shrek 2’s $72.2 million for biggest second weekend ever. Christopher Nolan’s Batman Begins follow-up has reached $314.2 million in just 10 days, another record. Pirates of the Caribbean: Dead Man’s Chest held the previous record in the amount of days it took to cross the $300 million mark – it needed 16 days to do so. On Monday, The Dark Knight will surpass Iron Man and Indiana Jones and the Kingdom of the Crystal Skull to become the biggest movie of 2008 domestically. It is already up to #23 on the all-time domestic blockbuster list and has a good shot at surpassing Star Wars Episode IV: A New Hope’s $460.998 million (not counting inflation) to become the second-biggest domestic earner of all-time, trailing only Titanic’s $600.788 million. The Dark Knight, budgeted at $185 million, stars Christian Bale, Heath Ledger, Aaron Eckhart, Maggie Gyllenhaal, Gary Oldman, Michael Caine and Morgan Freeman.