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

You never know what’s going to happen on those summer nights at the Hollywood Bowl. On Friday night, the iconic venue hosted the “Grease” sing-along screening, and John Travolta showed up ...

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.

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

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

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

John Travolta made a surprise appearance at a Grease sing-along event at the Hollywood Bowl. The Hollywood Bowl hosted a ...

Catch a show at the Hollywood Bowl is ranked #12 out of 33 things to do in Los Angeles. See pictures and our review of Catch a show at the Hollywood Bowl.