Religulous is a documentary directed by Larry Charles and stars American comedian Bill Maher, host of Real Time With Bill Maher on HBO. According to Maher, the title of the film is a portmanteau derived from the words "religion" and "ridiculous", implying the satirical nature of the documentary that is meant to mock the concept of religion and the problems it brings about.
Known for his stance against religion, Bill Maher's views on the various world religions are explored as he travels to numerous religious destinations, such as Jerusalem and the Vatican, interviewing believers from a variety of backgrounds and groups, including Jews for Jesus, Muslims, polygamists, Satanists, Hasidic Scholars and even Rael of the Raelian Movement.