Call of Cthulhu silent film nearly done

The H.P. Lovecraft Historical Society have nearly finished making a 1920s/30s style black and white silent film of "The Call of Cthulhu", and they've put a quicktime trailer on their site.

It looks really bizarre: they seem to have done quite a good job of mimicking the visual style of films of the period, particularly the horrifying rituals of the cultists.