For those of you interested in playing music backwards to check for hidden messages, check out the following. I realize these may not be intentional, but regardless I found these interesting.
Led Zepplin - Stariway to Heaven
FORWARDS: If there's a bustle in your hedgerow, don't be alarmed now. It's just a spring clean for the May Queen. Yes there are two paths you can go by, but in the long run there's still time to change the road you are on.
BACKWARDS: Oh here's to my sweet Satan. The one whose little path would make me sad, whose power is Satan. He'll give you, give you 666, there was a little toolshed where he made us suffer, sad Satan.
Britney Spears - Baby One More Time
FORWARDS: When I'm not with you I lose my mind, give me a sign.
BACKWARDS: Sleep with me, I'm not too young.
Queen - Another One Bites The Dust(This one's my absolute fav :stoned:)
FORWARDS: Another one bites the dust.
BACKWARDS: It's fun to smoke marijuana.
If any of you know of other interesting backmasks (whether intentional or unintentional) feel free to share them.