Season 2 of "Grey's Anatomy": "Breathe (2 AM)" by Anna Nalick

The famous "code black" two-parter from the second season also features one of "Grey's Anatomy"'s most memorable musical moments. Most of the two-hour event focuses on the terrifying tension when the hospital goes on a "code black" lockdown after discovering that a patient has a homemade bomb lodged in his body.

Meredith, of course, winds up being the one who has to keep her hands on the bomb the whole time to keep it from going off. As the episode nears its end, she's finally able to extract it and hand it off to Dylan, the bomb-disposal police officer who has been working with her — which is when it goes off, killing Dylan and injuring Meredith.