1. John Travolta and Olivia Newton-John, "I Think You Might Like It"
It's the low-budget music video that really makes (or breaks) this holiday duet, which was written by "You're the One That I Want" composer John Farrar and released in 2012. In the three-minute clip, John Travolta flies his own airplane into town(!) and meets up with Newton-John, both of them wearing black outfits similar to those in the Grease finale. To celebrate the Christmastime get-together, the two do an awkward line-dance in someone's driveway before cruising around town in a Greased Lightning knockoff stacked high with fake presents. No wonder Rizzo skipped out on this reunion.