With nearly $500 million already pulled in at U.S. box offices, The Dark Knight might seem like the most lucrative movie ever. But big as Batman is in absolute terms for its U.S. gross, it and other recent movies like Shrek 2, Spider-Man, and Pirates of the Caribbean: Dead Man's Chest don't come close when you adjust for price increases. Tickets to see Gone with the Wind in 1939 cost around 23¢, but that's actually more like seven bucks today.
This data comes from Box Office Mojo, an online movie publication and box office reporting service. The box office gross is adjusted for inflation based on an estimated 2008 average ticket price of $7.08.