Grease' is 40 this year. Here are 6 more pop musicals to watch

It’s been 40 years since Sandy told Danny that he “better shape up” in the 1978 movie “Grease,” based on the Tony award-winning Broadway show. Theater critic Ben Brantley recommends six musicals that followed in its wake.

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Grease (Rockin' Rydell Edition) : John Travolta, Olivia Newton-John, Stockard Channing, Jeff Conaway, Barry Pearl, Michael Tucci, Kelly Ward, Didi Conn, Jamie Donnelly, Dinah Manoff, Eve Arden, Frankie Avalon, Randal Kleiser