7. When Harry Met Sally... (1989)
New Year's Eve is a night for romance, both fleeting and everlasting. So no list would be complete without at least one rom-com on the countdown. In the case of When Harry Met Sally..., it's not the New Year's Eve party itself—but the conversation that takes place between the two titular characters as the clock strikes midnight—that makes it such a memorable affair.
After a dozen years of serendipitous encounters and an on-off friendship, Harry (Billy Crystal) makes like Shirley MacLaine in The Apartment when he realizes that he's in love with Sally (Meg Ryan) and rushes to tell her, sprinting the city streets to reach her, "because when you realize you want to spend the rest of your life with somebody, you want the rest of your life to start as soon as possible."