How can I make my 27" iMac and my 27" Thunderbolt display the same height? I'm using an external 27" Thunderbolt display with my 27" iMac and I want the iMac and display to have the same height. By default, the Thunderbolt display is about an inch shorter than the iMac, which is quite annoying.

I'm sure this problem comes up all the time. Is there any solution for evening out the heights? I'm open to something as hacky as "this book is the right height – put it under the display."
I'd recommend buying this book: 

http://www.amazon.com/Life-Times-Thunderbolt-Kid-Memoir/dp/0767919378/ref=sr_1_7?ie=UTF8&amp;qid=1330596630&amp;sr=8-7

It's exactly 1" thick, put it under the monitor.