If one so desired, one could dedicate one's herb garden solely to the many varieties of Basil that are available.  There are many types of Basil with varying scents, flavors, leaf coloration's and habit of growth.  Most have culinary uses others are purely ornamental.

Culinary Uses

Basil is an extremely versatile herb to use in many different types of food and styles of cooking.  Basil works well with tomato-based dishes, eggplant, zucchini, squash and spinach.  It is the main ingredient in many pesto sauces.  Basil also goes well with pastas, poultry, veal, fish and shellfish and is an essential ingredient in many vinaigrettes.  Basil blends well with other spices such as oregano, lemon, garlic and thyme.

Although native to Southeast Asia and Northeast Africa its greatest usage is in Italy and the Mediterranean regions.

Cultivation

In Florida, basil does well throughout most of the year, even during our torrid summers. It may be started from seeds, grown from cuttings or, if you are in a hurry, purchased as small plants from garden stores and supermarkets. Basil prefers a light to sandy, well-drained soil in full sun and will attain a height of 12" to 2 1/2' depending on the variety.

Source: What Herb Is That?