Your mind is a sponge and will soak up everything you watch - make sure you keep it positive and empowered!
Birthing reality TV no more reflects what normal birth is like than Big Brother reflects what normal shared living is like. These shows are designed to get maximum ratings...and positive and empowered doesn't score ratings.
What's good to watch instead of "one born every minute" or "deliver me"?
If you must watch mainstream then Call the midwife is a good option. My own photo.