A couple quizes to help you on your way:
http://www.wizards.com/default.asp?x=dnd/dnd/20001222bhttp://quizfarm.com/quiz_repository/Style/65/http://www.okcupid.com/tests/take?testid=8383433238062182666For those too lazy for the quizzes, the choices (courtesy of Wikipedia) are:
Lawful GoodA lawful good character typically acts with compassion, and always with honor and a sense of duty. A lawful good nation would consist of a well-organized government that works for the benefit of its citizens.
Batman, Dick Tracy and Indiana Jones are cited as examples of Lawful Good characters.
Neutral GoodA neutral good character is guided by his conscience and typically acts altruistically, without regard for or against Lawful precepts such as rules or tradition. A neutral good character may cooperate with lawful officials but does not feel beholden to them. A doctor that treats soldiers from both sides in a war would be considered Neutral Good.
Examples of Neutral Good characters include Zorro and Spider-Man.
Chaotic GoodChaotic Good is known as the "Beatific" or "Rebel" alignment. A chaotic good character favors change for the greater good, disdains bureaucratic organizations that get in the way of social improvement, and places a high value on personal freedom. Most elves are chaotic good, as are some fey.
Starbuck from Battlestar Galactica, Malcolm Reynolds from Firefly, and Robin Hood are examples of Chaotic Good individuals.
Lawful NeutralA lawful neutral character typically believes strongly in Lawful concepts such as honor, order, rules and tradition, and often follows a personal code. A Lawful Neutral society would typically enforce strict laws to maintain social order, and place a high value on traditions and historical precedent.
James Bond, Odysseus, and Sanjuro from Yojimbo are Lawful Neutral.
NeutralNeutral alignment, also referred to as True Neutral, is called the "Undecided" or "Nature's" alignment. This alignment represents neutral on both axes, and tends not to feel strongly towards any alignment. A farmer whose only concern is to feed his family is of this alignment. Most animals, lacking the capacity for moral judgement, are of this alignment.
Lara Croft, Lucy Westenra from Dracula, and Han Solo in his early Star Wars appearance are Neutral
Chaotic NeutralChaotic Neutral is called the "Anarchist" or "Free Spirit" alignment. A character of this alignment is an individualist who follows his or her own heart, shirks rules and traditions. They typically act out of self-interest, but do not enjoy seeing others suffer. Many adventurers are of this alignment.
Captain Jack Sparrow, Al Swearengen from the TV series Deadwood, and Snake Plissken from Escape from New York are verifiably Chaotic Neutral characters.
Lawful EvilCharacters of this alignment show a combination of desirable and undesirable traits: while they typically obey their superiors and keep their word, they care nothing for the rights and freedoms of other individuals. Examples of this alignment include tyrants, devils, organized criminals, those with samurai-like aspects, and soldiers who follow the chain of command but enjoy killing for its own sake.
Artemis Entreri is a prime example of Lawful Evil, as are Boba Fett of Star Wars and X-Men's Magneto along with Doctor Doom.
Neutral EvilCharacters of this alignment are typically selfish and have no qualms about turning on their allies-of-the-moment. They have no compunctions about harming others to get what they want, but neither will they go out of their way to cause carnage or mayhem when they see no direct benefit to it. A villain of this alignment can be more dangerous than either Lawful or Chaotic Evil characters, since he is neither bound by any sort of honor or tradition nor disorganized and pointlessly violent.
Complete Scoundrel cites X-Men's Mystique and Sawyer of Lost as Neutral Evil characters.[3] Yugoloths are the multiversal representatives of Neutral Evil.
Chaotic EvilChaotic Evil is referred to as the "Destroyer" or "Demonic" alignment. Characters of this alignment tend to have little respect for rules, other peoples' lives, or anything but their own selfish desires. They typically only behave themselves out of fear of punishment.
Carl Denham from King Kong and Riddick from Pitch Black are Chaotic Evil.