BABloggee John Kennedy (no relation, of course, to Jamie) sent me word about a fun pareidolia site: Happy Chair is Happy. It features inanimate objects that look like faces. It's really a fun series to poke through, and it's brought to you by the I Can Haz Cheezeburgers folks.
I'll note with some amusement that in a recent entry they included a picture I featured here in March of an alien prickly pear cactus. They didn't have the source, so I left a comment with a link. I do love that picture!