John Travolta, who starred as 'Grease' bad boy heartthrob Danny Zuko, crashed the Hollywood Bowl's sing-along event Friday.

Legendary actor John Travolta recently surprised fans by dressing up as Danny Zuko from the classic 1978 film ‘Grease.’ ...

John Travolta pulled out the hair gel and leather to revive his role as Danny Zucco in a Hollywood Bowl screening of "Grease.

John Travolta made a surprise appearance at a “Grease” sing-along at the Hollywood Bowl dressed up as his beloved character, ...

For "Grease" fans in Los Angeles, recent summer nights had a surprise in store. We'll tell you more, tell you more. John Travolta, who brought to life bad boy heartthrob Danny Zuko in the 1978 ...

LOS ANGELES — For "Grease" fans in Los Angeles, recent summer nights had a surprise in store. We'll tell you more, tell you more. John Travolta, who brought life to bad boy heartthrob Danny Zuko ...

You never know what’s going to happen on those summer nights at the Hollywood Bowl. On Friday night, the iconic venue hosted ...

John Travolta’s career has been one of ups and downs, spellbinding fame, radical reinvention, and unforgettable performances.