The stuff listed so far is hardly tea. Once you develop an appreciation for freshly-brewed proper tea you'll quickly realize this. Do yourselves a favor and buy some quality loose-leaf and brew it yourself.
My favorite teas are as follows:
Gyokuro Green Tea
Silver Needle White
I even like some tisanes; my favorite is probably Rooibos.
I have a teapot in my office and one at home, and I brew probably 3-4 cups of tea a day. If I'm wanting a bit of sweetness I might throw some minced pear, peach, or whatever else I feel like. Mixing some teas often produces great results as well. I have a green, white, and Rooibos with a little pear that's fantastic.
Teavana
Adagio