I only drink soda at work, and that is because it's free, and Sprite Zero tastes alright while having no calories.
I drink the free coffee at work (John Conti). Whenever I drink coffee with my dad, it's usually Starbucks because he's addicted. Their coffee is too bitter for my tastes though.
I have had a few Red Bulls in my life, and they make my heart beat disturbingly fast. Most of the time I have had them, I was drunk at the time, and it made me very aware of my surroundings (which is an odd feeling when you're drunk). I used to drink Jolt Cola when I was in high school. That stuff was nasty.
I'm primarily a beer drinker. I pride myself on drinking mostly good beers, and being a bit of a connoisseur of fine brews. But if I'm drinking to get drunk, I'll drink the cheap stuff. I'll only drink sweet, white wines or champagne. The tannins in red wine gives me a wicked headache, even before I'm done drinking. I'm not huge on mixed drinks, but I'll drink a whiskey and sprite/coke/ginger ale or a White Russian on occasion. Also, if I'm on the beach or at a pool party, margaritas or other fruity drinks are considered acceptable.