We have four kinds of tea here, but they're all herbal without any caffeine. :P

I have stocked my own boxes of tea at previous jobs, but I have yet to get around to bringing in my own tea here. But then the coffee here is also better than at any previous job, so there's less impetus. As it is, the coffee (and hot water dispenser) are both a minor pain in the ass to get to from my desk, so as often as not, I drink a cup of tea in the morning at home, and wait until I head out for lunch to get any further beverages.