My favorite tea is Lady Grey -- it's like Earl Grey, but there are a few more subtle flavors going on in it. Though, of course, I also like Earl Grey, and I like to keep a variety of herbal teas around: raspberry, mint, lemon, peach, licorice spice, etc. I especially like the herbal teas that combine several flavors so there's a certain complexity to the taste -- teas like Christmas Eve or Sandman are a good example of that. Licorice spice is nice because it's naturally sweet.
Many years ago, I recall having almond tea with my husband's grandmother. It was absolutely lovely, but I haven't been able to find it since then. Another wonderful tea that I don't have easy access to is called "rhubarb cream" -- my brother-in-law sent us some of that in loose leaf form for Christmas last year.
You know, I really ought to check out a local tea shop and see if I can get myself some of these more unusual, higher quality teas there...