AMC has viewers covered this holiday season with "AMC Best Christmas Ever," its largest slate of holiday programming ever featuring 35 films and 18 specials, airing all day, every day. Beginning Monday, November 26 through Christmas Day, the month-long programming marathon will offer up more than 600 hours of holiday-themed movies, specials and family favorite films, as well as the television debut of Mariah Carey's All I Want for Christmas is You (2017).