from the Ozploitation movement and helped to popularise the post-apocalyptic dystopia genre, held the record for the biggest profit-to-cost ratio for several years until it was broken in 1999 by The Blair Witch Project, also a sleeper hit. The independent film Halloween, which played over the course of fall 1978 through fall 1979 and relied almost completely on word-of-mouth as marketing, was also a sleeper hit, having a box office take of $70 million on a budget of only $325,000. Its success caused other slasher films to try the same approach, although few fared as well since horror films heavily rely on opening weekend box office and quickly fall from theaters. Other notable examples of horror sleeper-hits to follow in Halloween'''s wake include Friday the 13th in 1980, The Evil Dead in 1981, A Nightmare on Elm Street in 1984, Scream in 1996, I Know What You Did Last Summer in 1997, The Blair Witch Project in 1999, Final Destination in 2000, Saw in 2004, Hostel in 2005, Paranormal Activity in 2007, both The Purge and The Conjuring in 2013, and both Happy Death Day and the Academy Award-winning Get Out in 2017.Hocus Pocus (1993) underperformed at the box office but eventually became a sleeper hit through television airings on the 13 Nights of Halloween block on what is now Freeform.The Iron Giant (1999) was a box office bomb due to poor marketing on behalf of distributor Warner Bros., who did not have faith in the film. The film was very positively received, however, and earned a cult following once it arrived on home video and television, and is nowadays considered a modern animation classic and one of the greatest animated films ever made.Napoleon Dynamite made back its $500,000 budget and became a phenomenon in 2004.The Peanut Butter Falcon (2019) also went on to become a sleeper hit, expanding the following weekend to 1,249 theaters and earning $3 million, as well as $1.1 million on Labor Day. In music Don Howard's 1952 recording of "Oh Happy Day" was one of the earliest sleeper hits. Featuring only Howard's baritone vocals and his acoustic guitar played at an amateur level, it was initially released regionally and was never expected to become a hit. A massive groundswell of support from teenagers in Howard's home base of Cleveland, Ohio, led to the song rapidly rising in popularity, despite music industry scorn; cover versions (including