<P> The show's complete schedule can be found on its website . Because the show is so frequently repeated, audible cue signals ("stingers") are inserted at the beginning and end of commercial breaks, to facilitate substitution of commercials by local stations . </P> <P> George Noory hosts the show on weeknights and on the first Sunday of every month . Las Vegas - based investigative journalist George Knapp hosts the third and fourth Sunday of each month, and when there is a fifth Sunday, George Noory or another fill - in will host . Since the controversial firing of host John B. Wells, most Saturday episodes, as well as Sunday episodes not hosted by Knapp, have been hosted by Dave Schrader or Canadian political conspiracy talk show host Richard Syrett . Syrett and Schrader also work Fridays when Noory travels to Denver to record his video show Beyond Belief . Jimmy Church is another guest host, sometimes getting the whole weekend . </P> <P> Mike Siegel hosted the show from April 2000 until February 2001 . He became a frequent substitute for the show's original host, Art Bell in late 1999, and when Bell announced his retirement in early 2000, he recommended Siegel to succeed him . Siegel maintained the format of the show that Bell had created, but his personal style was very different, and the show became less popular . Siegel hosted the show from Seattle, Washington, where he lived . Early in 2001, Bell decided to return, and Siegel left the show . </P> <P> Other past hosts include weekend host Ian Punnett (who retired from the show due to tinnitus), Hilly Rose, Barbara Simpson and Rollye James . </P>

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