This is one of my favorite episodes. The dialogue between Ross and Rachel is so hilarious. We all knew that Rachel had the capacity to be a b!tch, but she really has fun with this episode. My favorite line is when Ross tells Rachel, "We should ask the doctor if she even knows how to deliver a baby that's half human, half PURE EVIL!" It cracks me up.
Plus, I think every Friends fan was excited for the Ross-and-Rachel moment that happens at the very end of the episode. With Rachel going into labor, we were all hoping for Ross and Rachel to get back together.