"Ghostbusters" quickly developed a dedicated fan following that has continued to thrive in the years since. Despite its mainstream success, it is considered an example of a cult blockbuster—a popular film with a dedicated fanbase. It is popular globally, inspiring fan clubs, fan-made films, art, and conventions. Fans dressed as Ghostbusters occasionally burst into the main reading room of the New York Public Library. The 2016 crowdfunded documentary "Ghostheads" follows various fans of the series and details the impact it has had on their lives, interspersed with interviews from crew including Aykroyd, Reitman, and Weaver. Memorabilia from the film is popular, with a screen-used Proton Pack selling for $169,000 at a 2012 auction. In 2017, a newly discovered ankylosaur fossil was named "Zuul crurivastator" after Gozer's minion.