With the Friday estimate, DS has now surpassed The Tourist's domestic box office. By the early next week, it should pass Chocolat to enter Johnny's Top Ten films in terms of domestic box office (not including cameos). Remember, too, that 4 of those Top Ten films are Pirates movies, which kind of skew everything.
By the way, I was noticing that one of the two IMAX's in the DC area that are still showing DS, at the National Museum of Natural History, has now committed to showing DS through June 21. So even if it may get hard to find on IMAX, it's not totally disappearing from IMAX for another 3 weeks.