Worst coffee? Hmm, so many to choose from, but I'm reminded on a daily basis that our office has a coffee service that delivers (right to our breakroom) the worst tasting coffee in the known universe. They have a Bunn machine, and those little foil baggies of coffee. The machine never gets cleaned ( a huge problem right there) since it's a direct line, and who knows when the filter was even looked at. The coffee tastes like a cross between beef bullion and the water green beans get boiled in. Weird. Some days it can be as appetizing as weak vegetable soup with a slightly salted, bitter aftertaste. Yum. The bigger problem is that our company is under contract with this foodservice and we can't bring in any other coffemaking devices. Help! On the flip side there's a diner within walking distance of my house that has great coffee. A great treat on a saturday morning.