Dr. Oz goes public with your private questions about the penis. Learn what's normal, what's not, and what you don't know about men's sexual health. Here, Dr. Oz and the world's leading sex experts talk about the benefits of circumcision. And is curvature normal? Find out.

Click here to watch Part 1.

Click here to watch Part 3.

Click here to take Dr. Oz's Sex Quiz. What's your bedroom IQ?

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.