John Travolta surprises crowd by reprising Danny Zuko at Hollywood Bowl ‘Grease’ night: WATCH VIDEO

John Travolta, at 70, surprised the Hollywood Bowl audience during a 'Grease' sing-along by appearing as Danny Zuko. His unannounced entrance, complete with a blond wig, sparked a standing ovation and a nostalgic sing-along. Travolta's cameo, kept secret from even the cast and production team, elevated the evening, celebrating the enduring appeal of 'Grease'.

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