Buying a cellphone. Just as much of a headache as in the United States, but with a whole new set of vocabulary. I never learned the words for "prepay", "mobile to mobile", or "text message" in my Chinese classes.
Dairy Queen is tasty under any circumstances, but particularly after a spicy-hot Szechuan meal. We stumbled upon this store at a local shopping mall while looking for flannel sheets, which don't seem to have made it onto the domestic Chinese market (though I don't doubt they're exported by the ton to the United States.)