Possibly the most expensive movie ever made has actually managed to make its money back just days after release.
James Cameron's Avatar is like the Duke Nukem Forever of movies, with the obvious difference that it actually got made. Avatar was first dreamt up in 1994 and officially cost $237 million to make, although it is rumored to have cost more than twice that, which if true, makes it the most expensive single-part movie ever made. To put that into perspective, if the rumors are true, Avatar cost more to make than Transformers: Revenge of the Fallen and The Dark Knight combined.
After a relatively slow opening weekend, signs suggested that Avatar was going to struggle to recoup its enormous budget, but according to sources, the movie made over $600 million over the Christmas holiday, meaning that it made its money back, and more beside, in just ten days, disappointing those who hoped it might be the biggest flop of the decade.
Source: Topless Robot