Numi's Organic Rainforest Green is a blend of Chun Mee green tea, Yerba Mate and Lemon Myrtle. The organic tea is great tasting and great for you. They also have a variety of Rooibos blends, including a Green Rooibos, which I had never heard of. It "comes from the same plant as Rooibos (Red Tea), yet is not sun dried" and they claim it has more antioxidants than green tea.
More about healthy teas here.