A German and British aeroplane shot each other down in Norway during WWII. The crew met and helped each other survive. Two of them later visited each other many years after the war was over as friends.
Bill Murray and Dan Aykroyd dusted off their Ghostbusters costumes to visit a terminally ill child who was a fan of the film and wanted to meet them.
The "Like" button on Facebook was supposed to be the "Awesome" button.
The glass winged butterfly lacks colored scales, which makes its wings transparent and helps it avoid predators.