Reverse Speech and Back Masking

What is Reverse Speech?
http://en.wikipedia.org/wiki/Reverse_speech

Reverse Speech General Introduction


Absurdities of Reverse Speech


Furthering On BackMasking
http://en.wikipedia.org/wiki/Backmasking

A skeptical analysis of reverse speech
http://www.csicop.org/si/2000-03/reverse-speech.html