Starbucks is opening its first-ever teahouse today.  Teavana Fine Teas and Tea Bar in Manhattan will be serving a range of loose-leaf teas and tea blends.  The company hopes to open at least one-thousand of the bars in North America, and more overseas.  Over the next five to ten years, Starbucks expects to make a significant dent in the 90-billion-dollar global tea market.  A second Teavana is set to open in Seattle next month.