In his blog The Lovecraftsman dead Cthulhu waits dreaming of an unspeakable emoticon worthy of his horror. Behold, the Cthulhu emoticon.

The Lovecraftsman has a few more Cthulhu emoticon variants (can you come up with your own?): Link - via Metafilter

See also: Cthulhu stuff from the NeatoShop