Only reason I have one is because I was part of the staff during our last couple of months at AOL before they decided they were better off without us. In a way, I still am staff though without any official duties for the past four years.
I bought myself a new cup! I found myself in WalMart very early this morning, and there they were…those cobalt blue clear glass mugs in a nice curvy shape. So I treated myself and brought it home. It’s lovely, and holds much more than I expected.
What is it with cobalt kitchenware? It sells like crazy in my antiques booth, and I can’t get enough of it in my own kitchen.
It’s that pretty blue which is so soothing. Like my new sapphire ring !! 
I have a variety of coffee cups.
One stainless steel coffee travel mug, one shiny, almost mirror surface green coffee mug, two World Wrestling Entertainment mugs, one Risperdal mug (a drug that I dispense in the pharmacy quite often), 4 mugs with cows on them that someone gave me, four plain white mugs that came with a stand, and a cobalt mug. 
At work, I stick to the Risperdal mug, and at home I use the WWE mug. (No one in the house will use them, because they think wrestling is stupid.)
Oh, and for Christmas two years ago, a cow-orker gave me a “one cup” coffee maker. It came with a nice stainless steel mug, and it makes just enough coffee to fill it up. I don’t ever get to use it, though, because I never drink just one cup.
Mine is on my desk. Funnily enough when our director retired I wrote his name on the bottom of my cup and proceeded to drink from it in a meeting the next day. People noticed and were horrified that as soon as he left I “stole” his cup.
My primary coffee cup is my Straight Dope coffee cup (hey, I have a T-shirt, too!)
My back-up cup is a Ft. McClellan Memorial cup (base was on the closing list) that my sister bought for me. I found out the hard way that the gold edge around the top is real gold when I put it in the microwave one day. :eek:
I used to have a really neat cup I got while working at the vet clinic, courtesy of the Advantage salesman (Advantage is a topical flea treatment made by Bayer) - it had a picture of a big, ugly black insect that is supposed to be a flea on the side. When you filled it up with coffee the heat caused the ‘flea’ to slowly fade away, to be replaced by a smiling cat and dog with little fleas jumping off of them in every direction. It was cute!
The cats broke it. 