For some reason - I was expecting the Charlotte-Douglas International Airport to be smaller than it is - in any case, the Airport was way colder than it should have been. I had to wear my winter coat the entire time I was in the Airport during my layover.
As Tu-Van and others have noted - there are lots of rocking chairs throughout the Airport - I thought this was a neat touch.
As Kevin. L. mentions - I too had a long journey through the Airport from what I recall was Terminal C all the way over to Terminal E. For a moment I thought I was in DFW.
My gate was E32 - the farthest, last gate. The Airport offers free Wifi.