Inflation-adjusted worldwide gross: $1.25 billion
Actual gross: $974.76 million
Year released: 2001
Published in 1997 by British author J.K. Rowling, “Harry Potter and the Sorcerer’s Stone,” the first film in the series, is about a boy named Harry Potter who discovers he is a wizard. The success of that first book led to six additional novels. Warner Brothers gained the film rights and had immediate success and fanfare with the first movie in 2001, pulling in an inflation-adjusted $1.25 billion. Since then, the studio has released seven additional films, which have proved to be extremely successful.