http://en.wikipedia.org/wiki/Pareidolia
Word of the Moment: Pareidolia, n.
A psychological phenomenon involving a vague and random stimulus (usually an image) being mistakenly perceived as recognizable.
Common examples include images of animals or faces in clouds, seeing the man in the moon, and hearing messages on records played in reverse.
(from Greek para- amiss, faulty, wrong. eidolon, diminutive of eidos appearance, form)