CNN with the details:
Score a personal best at the box office for Quentin Tarantino this weekend.
"Inglourious Basterds," his revisionist take on WWII starring Brad Pitt, grossed an estimated $37.6 million, besting the reigning box office champ "District 9," and giving beleaguered studio The Weinstein Co. a little financial relief. "Basterds'" opening far surpasses Tarantino's previous best opener, "Kill Bill Vol. 2," which brought in $25 million in April 2004.
Source: Box Office Mojo