Not that this should come as any surprise, but The Dark Knight's first day on DVD and Blu-ray was a rousing success. According to The New York Times, consumers in the United States, Canada and the United Kingdom have purchased over 3 million copies of The Dark Knight on DVD in the first day of release, December 9.

In addition to those mammoth sales figures, The Dark Knight Blu-ray sold an additional 600,000 copies on the first day, and it was said that the BD sales were expected to eclipse 1 million units by Saturday. That figure shattered the previous first-day BD sales record of 250,000, set a few months ago by Iron Man.It was also said that BD sales were particularly strong in grocery stores, indicating the format is moving beyond the early-adopter stage.

"Numbers like these in this economic environment firmly establish Blu-ray as where consumers are headed," said Kevin Tsujihara, president of Warner Brothers Home Entertainment.