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

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

The event started at 8 p.m. as they waited for the sun to set enough for the screening. Conn was joined on stage by three ...

John Travolta's Danny Zuko reemerged at the Hollywood Bowl, 47 years after the star portrayed the Rydell High T-Bird in ...

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

The 71-year-old star stunned fans at a Grease sing-along, marking his first return as Zuko since Olivia Newton-John’s passing ...

John Travolta made a surprise appearance at Friday night’s “Grease” sing-a-long at the Hollywood Bowl dressed as his iconic drag racing, hip swinging 1950s bad boy Danny Zuko. “Tonight at the ...

John Travolta thrilled fans with a surprise appearance at the “Grease” Sing-A-Long at the Hollywood Bowl, dressed as his ...

The clip showed the “Pulp Fiction” alum walking out as the crowd went wild before Travolta joined his stunned “Grease” ...

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

According to Radar Online, John’s collaboration with filmmaker Randall “Ives” Emmett has also impacted Travolta's alleged ...