Summer nights are in full swing. And to kick off the season, John Travolta made a surprise appearance at a “Grease” sing-along at the Hollywood Bowl in Los Angeles on Friday night. The actor, 71, ...

Olivia Newton-John is being remembered. After the actress' husband, John Easterling, announced that she died at her California ranch on Monday morning, tributes poured in for the Grease star online.

John Travolta is hopelessly devoted to Danny Zuko. The “Grease” star from New Jersey made an unscheduled visit Friday to a Los Angeles event dedicated to the 1978 movie. “Tonight at the Hollywood Bowl ...