Aw, shucks! Even after all these years (Grease came out in 1978), John Travolta (Danny Zuko) and Olivia Newton John (Sandra Dee) have remained close. And looky here! They even performed a new Christmas song together and turned it into a music video. "I Think You Might Like It" follows the story of two aliens disguised in Men In Black-style human skin suits as they attempt to learn how to do people things like driving, line dancing, walking down the hallway, watching TV and showing affection. 'Tis the season!