When I go to sleep, I like to play an ambient album through the speakers. I turn the screen off using the keys on the top of the keyboard (turn the brightness all the way down) and lie back. Problem is, the screen will turn itself back on every few minutes. I can fix this by swiping my finger across the trackpad and it will go back to off, but its still irritating. I have a new MacBook Pro with High-Res Antiglare from May 2011 btw.