Grace: (about Jimmy) We split up because of religious differences. I was raised Southern Baptist, and he was Satan.
The German episode title is "Sternschnuppen", meaning "Shooting Stars".
Grace: I killed a man in Cedar Rapids just to watch him die.
This is a reference to the Johnny Cash song "Folsom Prison Blues," which contains the line, "I shot a man in Reno just to watch him die."