Just curious: what do you think of buttermilk and/or non-cow milk?
I got my start on coffee with iced coffee, long before there was a Starbucks. Even now I have no problem with cold coffee.
As I heard long ago: You can get used to anything but a rock in your shoe. 
Listed in the order I drink them in the course of the day:
Orange juice
Water
Dr. Pepper
I like certain other types of juice, but don’t drink any of them regularly.
Root beer float
Chocolate malt
Hi Zeldar, I reported your OP because I think it will have more legs if moved to CS, or anyway, out of the Game Room.
Anyway, water. Anything else is a distant, distant second for me. Coffee, fruit juice, Red Bull would be distant seconds. Coffee every morning, fruit juice and Red Bull (I know, I know) a few times per week.
Good idea, chiroptera, and thanks for taking the initiative there. Maybe some sub-categories would make for easier / smarter polling.
While we’re naming actual drinks, maybe we could come up with some categories.
Colas / Pop / Soft Drinks
Juices
Creamy drinks
What would be others?
Water by a mile.
After that I have a soft spot for cherry limeade, watermelon agua fresca, and Japanese peach water.
Iced tea is good too.
I may drink 4 or 5 sodas a year tops, just not into it.
Yep, love iced coffee too. That’s what I have when I’m at home.
Seltzer.
Coffee (morning)
Seltzer
San Pellegrino
Lemonade (with seltzer)
Pommegranate juice (with seltzer)
Iced Tea (unsweetened)
Tea (evening)
Ginger Ale or Coke (very occassionally)
Coffee in the morning, or at work.
Sweet tea, with a dash of lemonade, most of the day.
Diet cherry vanilla Dr. Pepper, when I can get it. (Apparently the Dr. Pepper Corp. has decided that it’s a beverage with strictly regional appeal, and only distributes it to certain parts of the country. My local grocery says they can’t even special-order it. But it’s included in the myriad choices in the soda machines that Burger King has started using.)
Cream soda.
I would live on bacon, ice cream and coffee if I could remain healthy on it.
Things do seem to be picking up after that move!
After we have 30 individuals contributing ideas (we have 22 at the moment) I’ll attempt a summary post of what’s been mentioned so far. I’d like to include some categories, so please mention those that seem appropriate to you – along with individual favorite beverages.
It’s possible we may want to have several preliminary polls for this world-changing issue! 
Hibiscus tea, AKA Jamaica
Horchata
Where’s that vomit smiley when we need it??
Lassi. Mango or salt.
Categories that come to mind are:
I just realized that horchata would be hard to categorize by my list of five categories. (I’d call jamaica a “juice,” even though it’s made by boiling the leaves of a plant – i.e., it’s a chilled “infusion,” a concept for which some people use the phrase “herbal tea,” which is silly, because tea is a specific plant – you know, the one with caffeine).
Also, if you go with my five categories (plus an “other” category), I recommend renaming the “hot drinks” category so it can include iced tea and iced coffee (and cold yerba mate – yum!).
Sodastream-type home carbonated water.
I drink water (from the tap) almost exclusively, except for a couple beers during NFL games. After water, I’d say…actually, I can’t imagine drinking anything other than water.
I used to drink all soda, all the time, but switched to water around ten years ago. For the first couple months, water tasted flat and boring. After a year or so, water tasted like the most refreshing, delicious thing in the world, and anything else (soda, orange juice, whatever) felt dirty and muddled.
Drink water long enough and everything else becomes kind of gross.
I think you should expand on milk to include milkshakes, malts, thickshakes, etc.
My beverage of choice is Coke Zero.