I always liked quotes that made fun of other shows or movies. After Sophia wakes up in the hospital in "Bang the Drum," she says "I survived war, disease, and two seasons of Designing Women."
When Rose is waiting for Bob Hope to call in "You Gotta Have Hope," I love Dorothy saying "This is not Miracle on 34th Street."
And one of my favorites I can't pronounce, or write. Miles has just left after bringing Sophia and Rose home from the ballroom (Dancing in the Dark) and Rose leans against the door babbling in her St. Olaf language about how hot he is. Something like "helder-va-ga-va-gerfluven-huven." She just looks so smitten, which makes her look pretty.