The first, second, and third pic are Thamnophis sirtalis (T.s.) tetrataenia. And yes, there aren't very many people that don't think they're gorgeous. They are considered by many to be North America's most beautiful snake.

Unfortunately, they are off limits to us here in the USA. They are also known as the San Fransisco garter snake, and are a federally endangered species. Penalties for collecting, trafficking, or possession are pretty severe.

California Red Sided garter snake (T.s. infernalis) can look similar, be just as beautiful, and won't get us into trouble with the law.