Take a look at this site. Sure we've all heard the crazy claims that certain pop records when played backwards contain satanic messages and the like - but have a look at the site, this goes further... The idea is that speech works on two levels - forward and backward. When you listen to forward speech, you hear what the person was consciously saying. Suppposedly, when you listen backwards, you hear (amongst the gibberish) what was coming from their unconscious mind, i.e. what they really think. Bull**** maybe, but interesting to look at all the examples they have on the site (many by yer very own George W).