Grey's Anatomy, Season 7

Meredith:
They say lightning never strikes twice, but that's a myth. It doesn't happen often. Lightning usually gets it right the first time. When you're hit with 30,000 amps of electricity you feel it. It can make you forget who you are, it can burn you, blind you, stop your heart and cause massive internal injuries. But for something that happens in only a millisecond, it can change your life forever.