My coffee order varies widely, depending on mood. I do always get 'fancy' drinks whenever I go, because after working in restaurants for years where I got free, unlimited filter coffee, I refuse to pay anything 'normal' that I can get/make at home. Therefore, when I treat myself to Starbucks/similar, it is a real treat, not an average coffee (I also don't drink that much plain coffee period).
My old standard was a grande white chocolate mocha with extra shot (regular is TOO sweet), but now I typically go for a peppermint mocha or chai latte (no water), depending on my level of caffeine preferred
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During Christmas, though, it's almost always a seasonal drink! Eggnog lattes are fabulous, but I'd like to give the crème brulee a chance. I miss the 'peppermint mocha' of the US, but a regular mocha with peppermint syrup accomplishes the same year round!
Depending on where I'm temping, I visit Starbucks maybe twice a month. It's been more often lately because a) the weather; b) having one just across the street!