Die Hard is a classic Christmas movie because it captures the holiday spirit in a unique way. It's a story of a man fighting against terrorism during a Christmas party, demonstrating bravery, determination, and selflessness. While the movie is often considered an action thriller, it still celebrates the season through its setting in a Christmas party and the hero's ultimate victory during the holiday. It's a Christmas movie because it reminds us that the holidays are about more than just presents and decorations, it's about celebrating life and protecting the people we love.