There is a Seattle's Best Coffee in the Denver Airport! I thought I would mention it just in case you're craving a coffee or espresso beverage, and passing through the Denver Airport. I dropped by on September 30, 2012, early in the morning. I think I was there before 6:00 a.m. I was half asleep, and hungry. I saw the Seattle's Best and took a few photos. I will say, this wasn't my best SBC encounter. I was hungry and wanted a breakfast sandwich, and so I was disappointed to learn that this Seattle's Best does not have a warming oven, and hence, doesn't offer any warmed breakfast sandwiches. I have to admit, that I went on my way, and didn't actually get anything from this SBC. Sorry to not have a better review of this store. According to the Denver Airport website, this store is in the "Jeppesen Terminal" on the west side, level 5. I hope that helps you find it!
Here's what you're looking for:
Enjoy your coffee at the airport!