Thai Basil has to be one of my favorite Asian herbs second only to cilantro. I try to use it as much as I can in my cooking. It has a has a fairly pungent licorice flavor that hold up well when cooked. I use it in stir-fries, soups, cold noodle dishes and salads.
Thai basil grows well under the same conditions as sweet basil, though I find it a bit less temperamental than the latter. I pinch back the flower buds when they appear to keep the plants nice and bushy.