It's a Wonderful Life (1946)

This classic film has been a staple of American cinema since 1946. It tells the story of George Bailey, a small-town guy who gets a chance to see what the world would be like if he'd never been born. Directed by Frank Capra, it's a heartwarming tale that'll make you appreciate the value of life and the people around you. It's a movie that'll put things into perspective and remind you to cherish the life you've got.