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

Because of its great cultural and intellectual influence, Boston has been known as the Athens of America for centuries. That ...

John Travolta surprised fans at the Hollywood Bowl Grease sing-along, reprising his iconic Danny Zuko role with a stylish ...

John Travolta gave "Grease" fans the thrill of their lives when he dressed up as Danny Zuko for a surprise appearance at a ...

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

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

Grease fans got a a big surprise at the Hollywood Bowl last night, where they gathered for a special sing-a-long of the ...

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 caused excitement among "Grease" fans in Los Angeles: The 70-year-old made a surprise appearance as Danny Zuko ...

Cleaning the oven is a tough job but it becomes even harder when there is burnt on grease - but there is a simple cleaning ...

An ancient human site in Germany features animal bones that were smashed into small pieces and heated to extract fat 125,000 ...

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