The foreskin is an important part of male anatomy, and circumcision has serious negative consequences for not only the man, but his female partner as well. Men who were circumcised at birth have never known what a foreskin is like and don't know what they are missing.

The foreskin is erogenous tissue, containing thousands of erogenous fine-touch nerve endings. The most sensitive and pleasurable parts of the penis are removed by circumcision. These color-coded diagrams show the areas of sensitivity for both circumcised and intact anatomy:
www.circumstitions.com/Sexuality.html#sorrells

Boys should be able to choose what happens to their own bodies once they are adults. Bodily integrity is a fundamental human right. Clearly the AAP doesn't understand that.

This is an excellent video narrated by Dr. Dean Edell:
http://www.youtube.com/watch?v=h_bEBAdhjGg