Backwards Satanic Lyrics.... With Quicktime!

I accidentally just discovered a strange keypress in Quicktime: if you press Command-Left Arrow while watching a movie, it will play in reverse! I was watching a video in my browser, and accidentally pressed this thinking I would jump to the previous page in my browser's history, when instead everyone in the video started talking backwards! Maybe I can use this to find those supposed satanic lyrics in various music songs...