I love horror in all shapes and forms. However I do prefer visual and audio aspects simply for the artistic values. Creepy character designs and atmospheres, though they usually don't have much of an effect on me intimidation wise, are just too fascinating and I could admire them for hours.
On a less geeky note... I'm quite fond of clowns as well. Creepy and murderous alike. They're just... hilarious in that cheesy horrific way.