Harry Potter and Nielsen should have created a separate game-show list when "Who Wants to Be a Millionaire?" dominated the ratings. In 1998, Rowling sold the film rights of the first four "Harry Potter" books to Warner Bros. for a reported £1 million ($1,982,900). Rowling demanded the principal cast be kept strictly British, nonetheless allowing for the inclusion of Irish actors such as the late Richard Harris as Dumbledore, and for casting of French and Eastern European actors in "Harry Potter and the Goblet of Fire" where characters from the book are specified as such. After many directors including Steven Spielberg, Terry
Harry Potter list of highest-grossing films worldwide. "Philosopher's Stone" was the highest-grossing "Harry Potter" film up until the release of the final instalment of the series, "Deathly Hallows", while "Prisoner of Azkaban" grossed the least. As well as being a financial success, the film series has also been a success among film critics. Opinions of the films are generally divided among fans, with one group preferring the more faithful approach of the first two films, and another group preferring the more stylised character-driven approach of the later films. Rowling has been constantly supportive of all the films and evaluated "Deathly Hallows" as