Preheat the oven to 350F. In a large bowl, cream together the butter and the brown and white sugars. Beat the mixture until it's light and fluffy. Add eggs one at a time, beating well after each addition, then stir in vanilla extract. Continue to blend until mixture is smooth.
Add the flour, baking soda and salt to the mixture. Blend well. Stir in the chocolate chips and blend to evenly distribute throughout the dough. Drop the dough by tablespoons onto ungreased cookie sheets about 1 inch apart.
Bake for 8 to 10 minutes, or until the cookies are golden brown. Remove the cookies from the oven and allow to cool on the cookie sheet for atleast 5 minutes before transfering them to a wire rack to cool completely.