I drink de-caf all the time (Lipton's or Louisianne), but I spice it up a little by using one individual bag of Constant Comment with one family sized bag of de-caf. It's delicious with just a squeeze of lemon.
I'm talking iced tea here, but sometimes I pour a mug full and heat it in the microwave with a spoonful of honey for a toddy. Hint...add rum or whisky after it's heated...great for a cold or the flu. The lemon juice cuts the phlegm, the honey coats the throat, and the whisky makes you sweat out the fever and calms the cough.