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billy joel's surprise appearance at an unlikely venue. you're watching "world news now." ♪ >> announcer: "world news now" weather brought to you by nasacort. weather brought to you by nasacort. so i'm going pro. [ male announcer ] new crest tartar protection rinse. the only rinse that helps prevent tartar build-up and cavities. a little swishing. less scraping. yes! [ male announcer ] new crest pro-health