What a surprise?! Maybe that's what people thought when they enjoyed the six-song set played by Bruce Springsteen at Keflavik International Airport when his plane stopped early Wednesday to refuel. "He just came in and did some songs," said Federick Johnson, a service manager at the airport. Strolled into the terminal with his acoustic guitar, Springsteen played "Dancing in the Dark," "Bobby Jean" and "This Hard Land," along with "Working on the Highway," "Does This Bus Stop at 82nd Street?" and "I'm on Fire."