According to the Myers Briggs Type Indicator, I am an INFP:

INFP’s are:
- Sensitive, concerned, and caring
- Loyal to people or a cause
- Guided by an inner core of values in decision making
- Focused on contributing to their own and others’ inner development and growth
- Committed to a strong personal belief system
- Likely to enjoy reading, discussing, and reflecting on possibilities for positive change
- Usually seen by others as sensitive, introspective, and complex

Link:
My full report (Adobe PDF)
wow I am an INFP too!!! we took the test at my school and the sheet i got says only 2.4% of girls and .8% of boys have this specific brain type =)