A good strong caffeinated black coffee first thing in the morning totally floats my boat.

But for the rest of the day, it's usually DeCaff. I used to drink so much Caffeine that it started making me edgy and upset my digestion some-what (thus bringing me down, thus making me edgy. Ad Infinitum).

Of course, I am British, so Tea goes down a treat too. Tally ho!