There are many varieties of eggplants and they come in all shapes and sizes. The most common eggplant is called black beauty.
There are a number of great dishes you can make with eggplant including my favorite eggplant parmesan.
If eggplant is not part of your home vegetable garden you really should consider it. They are easy to grow with a little care and a couple of plants can produce all the of the eggplant you will need for an entire growing season.