It wasn't only Paul Hogan in 'Crocodile Dundee' who made it big in Hollywood from Australia. Olivia Newton-John beat him to the punch by several years. No matter what era you grew up in, at some point you'll have sat down to watch 'Grease' and been enthralled by Newton-John's performance as 'Sandy' opposite John Travolta. The movie was a launching pad for both of their careers, and she was the woman every high school girl dreamed of being.
In truth, it was singing that got Newton-John the 'Grease' role that made her world-famous. You can't perform in a musical unless you can hit the high notes, and she could most certainly do that! 'Grease' was only her second acting credit, but she'd already released eleven studio albums before the film came out in 1978. That's an incredible amount of work for someone who wasn't yet 30 years old.