Hollywood is famous for cranking out massive mega-productions costing hundreds of millions of dollars. And they have certainly gotten better at doing this in the last 10 or 15 years, although the number one movie on the list (in 2012 dollars) may surprise you. Also of note: A few of these movies are notorious flops, proving that audiences aren't always impressed by giant budgets.
Cleopatra
Pirates of the Caribbean: At World's End
Titanic
Spider-Man 3
Tangled
Harry Potter and the Half-Blood Prince
Waterworld
Pirates of the Caribbean: Dead Man's Chest
Avatar
King Kong
