Exploding heads, mutant aliens and bursting chests: horror’s greatest special effects – ranked!

From the beheading in The Omen to the attic scene in The Birds, here’s a countdown of the genre’s most iconic moments – in glorious, old-school pre-CGI styleTowards the end of the 20th century, when film-makers’ overreliance on CGI was increasingly making special effects less special, it took the old-school practical approach of Japanese film-maker Hideo Nakata to make one’s…