Your face is pretty remarkable. Whether you've got a baby face, a poker face, or a face only a mother could love... your identity is deeply rooted in your own unique face. And with over 40 muscles twisting and contorting, your face allows you to express a near infinite number of emotions and feelings. But not only are you capable of making faces -- your brain is also highly adept at recognizing what other peoples' faces are saying to you. In this episode about faces, we're going to mess with your mind and show you that there's more to a face than meets the eye. And if...

• Neil Patrick Harris
• Keegan-Michael Key
• Cara Santa Maria