They were the dream team. Danny and Sandy. Sandy and Danny. John Travolta and Olivia Newton-John were considered Hollywood royalty when Grease first came out, and frankly they still are. Their on-screen chemistry was something else and their harmonies were like silk. The original movie came out in 1978 which is wild, but with reboots, live musicals, and sequels we definitely will remember this classic musical for years to come. But where are the Dream Team now? In 2012, Olivia Newton-John and John Travolta teamed up and released a Christmas album, called This Christmas. Their most popular song from that