Warm in the morning and on cold days. Always like me a nice cuppa black coffee. Unless it's 102 out. Then it's anything with ice (tea is preferable).
Honorable mentions to a warm, well spiced apple cider. Good cider is hard to find these days, though.
If I'm just grabbing something to drink, it's probably a flavored seltzer out of the fridge. I used to be a real bad soda fiend but swapping to seltzer has helped me cut back on that a lot, and I still get to enjoy the carbonation.