It's always hard playing to an empty room but the Late Night production team decided it had to try (Letterman tried too, with mixed results). After sending the audience home Monday, Fallon started outside the show's Rockefeller Center studios as Hurricane Sandy emptied the streets, then moved inside and on stage to deliver his monologue. It's a testament to Fallon and his crew that the positive energy—and laughter—still reverberates across the airwaves despite the missing audience and dire circumstances.