Last year when I was doing my college finals I lived off triple espressos, black coffee and sugar-free Red Bull.
Apart from that, I have maybe one cup of coffee a month, a cup of tea about once or twice a week (one of which is usually green tea), maybe one hot chocolate a week and coke or any other pop about four or five times a year.
Really, I tend to stick to water. Sometimes I have a bit of fruit juice (watered down), milk or smoothies, and the occasional naughty milkshake. I rarely drink alcohol but I'm a plain old tap water girl at heart! I don't see the point in sugary or caffeine-loaded drinks - mainly because i love food so i'd rather save my calories for food rather than waste them on drinks when I can drink calorie-free water!