John Travolta, who starred as 'Grease' bad boy heartthrob Danny Zuko, crashed the Hollywood Bowl's sing-along event Friday. He surprised the audience and "Grease" co-stars alike.

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 ...

John Travolta revived one of his most iconic characters over the weekend, surprising crowds at the Hollywood Bowl with a cameo as Danny Zuko in the venue's singalong "Grease" event June 27.

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Screen icon John Travolta made a surprise appearance at a "Grease" sing-a-long at the Hollywood Bowl this weekend.

Grease fans were treated to a surprise they’ll never forget when John Travolta showed up in character as Danny Zuko—leather jacket, swagger, and all.

John Travolta surprises “Grease” fans at Hollywood Bowl sing-along: 'I thought you were going back to Australia!' The one that they want is the one that they got.

John Travolta gave "Grease" fans the thrill of their lives when he dressed up as Danny Zuko for a surprise appearance at a screening of the hit 1978 movie musical. The 71-year-old actor shared a ...

John Travolta dressed up as Danny Zuko and surprised 'Grease' fans at the Hollywood Bowl sing-a-long.

Travolta is no stranger to fan sing-alongs, as in 2019, he and Newton-John dressed up as their respective characters during a “Meet n’ Grease” sing-along event in Florida.

Fans at the 'Grease' Sing-A-Long screening at the Hollywood Bowl last night got a surprise when the original Danny Zuko strutted out onstage.