f.lux is a program that will dim your display for night time viewing. It is better than the "Adjust screen brightness" setting in Windows 7 for laptops. You can use Alt+PgDn or Alt+PgUp to dim or brighten the display beyond your daily setting and then it returns to its regular brightness in the morning.
Here are some other keyboard short cuts
Mormon Consecration was and is Voluntary
1 week ago