Penn & Teller: Bullshit! (sometimes renered Penn & Teller: B.S.! or Bulls***!) is an Emmy-nominated American documentary television series that has been on the air since 2003 on the premium cable channel Showtime on Thursday nights at 10pm EST. It is hosted by professional magicians/comedians Penn & Teller. Many episodes aim to debunk what the hosts see as pseudoscientific ideas, supernatural beliefs, popular fads and misconceptions, and often from a libertarian point of view, the political philosophy espoused by both Penn and Teller. The show criticizes proponents of what they perceive as nonsense and dishonesty—bullshit—often citing ulterior political or financial motives. The stated aim of the show is to apply critical thinking to misconceptions, and as is indicated by the show's title, the program adheres to Penn & Teller's characteristically blunt, aggressive presentation.