Brujeria
Movies, movies, movies... humm, well, the one that comes to mind directly related to witches, witchcraft, demons, evil and 'real' obscure thingies is Haxan , a silent movie from the early days of cinema, portraits stories about the old days in witchcraft. Nice documentary that can be accompanied with your preferred choice of music as soundtrack (personally, I listen to Art Zoyd and UZ). As a matter of fact, I assisted to a screening at the Palacio de Bellas Artes in Mexico City, where this film, and Murnau's Nosferatu and Faust were proyected one each evening, while Art Zoyd (featuring personal hero Daniel Denis from UZ) sonorized and musicallized live the flicks. From any angle seen, it was awesome, one of the coolest things I've witnessed. The theme, the music, the players, the band, the director, the stories, the photography...