Originally Posted by JxK
I used to use screen filter, but I've found a better alternative called ScreenDim Full
. Unlike screen filter which merely uses a gray overlay, screendim actually dims your screen below minimum brightness. Very useful for reading in darker surroundings.
Unless it has been changed, it doesn't always lower the brightness below the min level of the device (at least, it didn't work on my Flyer when I tried it).