From World Market stores I love Texas Turtle (chocolate/caramel/nut) and a favorite here in the office is Chocolate Raspberry. I love all coffee though, so maybe I'm not a good person to ask because I'll drink it all!
Millstone puts out a holiday mint coffee that at first taste isn't the best but it leaves such a wonderful after taste. It is only available over the holidays though. I stock up on it then. My regular every day coffee is Kahlua and Cream flavor from Millstone.
I know there are alot of winter flavors out now....I am not sure of the specifics. Last year, their web site had printable coupons for the flavored Coffeemate.
I think they might have changed the flavors this year...we found them the other day and bought the two new seasonal flavors they had: Peppermint Mocha and Gingerbread.
Haven't tried the Gingerbread yet, but the Peppermint Mocha is pretty good, not overpowering (like some of the flavored creamers can be).