: One of the most famous storylines in TV history, Izzie Stevens falls for patient Denny Duquette. Her desperate decision to cut his LVAD wire to secure a heart transplant led to a tragic season finale. "Code Black" Bomb Crisis
: A standout two-part event ("It's the End of the World" and "As We Know It") features Meredith holding an unexploded bomb inside a patient's chest while a bomb squad attempts a high-stakes extraction. Cristina’s Pregnancy
: One of the most famous storylines in TV history, Izzie Stevens falls for patient Denny Duquette. Her desperate decision to cut his LVAD wire to secure a heart transplant led to a tragic season finale. "Code Black" Bomb Crisis
: A standout two-part event ("It's the End of the World" and "As We Know It") features Meredith holding an unexploded bomb inside a patient's chest while a bomb squad attempts a high-stakes extraction. Cristina’s Pregnancy