Rooibos
Rooibos is a red tea, that is gaining a lot of popularity around the world. Technically it is not a tea at all and is more accurately described as a herbal infusion.
Green Tea
Green Tea is tea, and comes from the same plant as your regular (black) tea. The difference is in processing - Green tea is not fermented, and the process keeps many of the good components inside it unharmed.