Well, this depends on how you define "intelligent". We are all intelligent in many ways. Here are descriptions of the major "intelligences" that have been identified so far, careers that would capitalize on that intelligence, and some famous people to identify with. The activities we have created (listed on the Students and Teachers pages) encourages you to use many intelligences.

Read through the descriptions, and determine how intelligent are you? Keep in mind, you can be intelligent in more than one way.

Linguistic intelligence
The ability to read, write, and communicate with words.

CAREERS: authors, journalists, poets, orators and comedians
FAMOUS EXAMPLES: Charles Dickens, Abraham Lincoln, T.S. Eliot, Sir Winston Churchill.

Logical-Mathematical Intelligence
The ability to reason and calculate, to think things through in a logical, systematic manner.

CAREERS: engineers, scientists, economists, accountants, detectives and members of the legal profession.
FAMOUS EXAMPLES: Albert Einstein, John Dewey, Charles Drew.

Visual-Spatial Intelligence
The ability to think in pictures, or visualize a future result. To imagine things in your mind's eye.You use it when you have a sense of direction, when you navigate or draw.

CAREERS: architects, sculptors, sailors, photographers, and strategic planners
FAMOUS EXAMPLES: Picasso, Frank Lloyd Wright.

Musical Intelligence
The ability to make or compose music, to sing well, or understand and appreciate music. To keep rhythm. But most of us have a musical intelligence, which can be developed. Think of how helpful it is to learn with a jingle or rhyme (e.g. "Thirty days has September...").

CAREERS: musicians, composers, and recording engineers.
FAMOUS EXAMPLES: Mozart, Leonard Bernstein, Ray Charles.

Bodily-Kinesthetic Intelligence
The ability to use your body skillfully to solve problems, create products or present ideas and emotions.

CAREERS: athletes, dancers, actors, artists, builders, surgeons, craftspersons.
FAMOUS EXAMPLES: Charlie Chaplin, Michael Jordan, Norm Abrams.

Interpersonal (Social) Intelligence
The ability to work effectively with others, to relate to other people, and display empathy and understanding, to notice their motivations and goals.

CAREERS: teachers, facilitators, therapists, politicians, religious leaders and sales people.
FAMOUS EXAMPLES: Gandhi, Ronald Reagan, Mother Teresa, Oprah Winfrey.

Intrapersonal Intelligence
The ability for self-analysis and reflection–to be able to quietly contemplate and assess one's accomplishments, to review one's behavior and innermost feelings, to make plans and set goals, the capacity to know oneself.

CAREERS: philosophers, counselors, and many peak performers in all fields of endeavor
FAMOUS EXAMPLES: Freud, Eleanor Roosevelt, Plato.

Naturalist Intelligence
The ability to recognize flora and fauna, to make other consequential distinctions in the natural world and to use this ability productively–for example in hunting, farming, or biological science.

CAREERS: farmers, botanists, conservationists, biologists, environmentalists
FAMOUS EXAMPLES: Charles Darwin, E.O. Wilson.

(Information gathered from www.accelerated-learning.net/multiple.htm#bod)