predicted, Warner Brothers' The Dark Knight was a huge day-one success, with consumers in the US, Canada and UK snapping up three million copies during the first 24 hours (give or take a few) that it was on sale. More germane to our conversation, however, is this 600,000 figure, which tells exactly how many Blu-ray Discs were sold. We already know that around one-sixth of those were moved in the UK, leaving us to determine that North America did some serious shopping. The studio has now projected it to sell one million BDs by Saturday, and curiously enough, current sales have been "especially strong at grocery stores, indicating that the format is broadening beyond early adopters to more mainstream buyers, notably women." Needless to say, this title took down Iron Man's record of moving 250,000 BDs on day one, which just ratchets up the bar for the next big one to take down.