I have no good questions to kick this off, so instead ...
1. Call me Ishmael. —Herman Melville, Moby-Dick (1851)
2. It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife. —Jane Austen, Pride and Prejudice (1813)
3. A screaming comes across the sky. —Thomas Pynchon, Gravity's Rainbow (1973)
4. Many years later, as he faced the firing squad, Colonel Aureliano Buendía was to remember that distant afternoon when his father took him to discover ice. —Gabriel García Márquez, One Hundred Years of Solitude (1967; trans. Gregory Rabassa)
5. Lolita, light of my life, fire of my loins. —Vladimir Nabokov, Lolita (1955)