Adjust Your Apple Cinema Display Brightness

The very first time I was looking to adjust the brightness of my Cinema Display, I was puzzled that it wouldn’t work using the brightness buttons on my keyboard. Somehow I knew I was missing something, as the keyboard of my MacBook Air only has one pair of buttons, and how would it know which display I wanted to adjust, the Air’s or the display’s.

But what about the external keyboard? Shouldn’t that be able to brighten the external monitor and ...