For straight up coffee, we like the Caribou Coffee "Mahogany" and "Sumatra". Being from Minnesota, we are pretty loyal to the Caribou brand, plus it is good coffee. Coffee People "Donut Shop Coffee" is really good too.
As for flavored, we really like the Green Mountain Coffee "Island Coconut".
Seasonally, the French Toast and Gingerbread and Pumpkin Spice (all Green Mountain) are also really good.