When George asks Christina if Meredith thinks he's gay, he immediately replies no. In reality, Actor T.R. Knight is gay.
Every episode of the show is named after a famous song. "Winning a Battle, Losing the War" is a song by Kings of Convenience.
Being on vasopressin (medication to increase and keep blood pressure stable) would disqualify the patient from being able to donate his heart, however at the end of the episode you can see that the last organ to be harvested for transplant is his heart. This would not happen in the real world because the pressers damage and strain the heart.