Released a few weeks before New Year's Eve 2011, the film boasts an All-Star Cast including Robert De Niro, Michelle Pfeiffer, Jessica Biel, Ashton Kutcher, Sarah Jessica Parker, Jon Bon Jovi, Katherine Heigl, Josh Duhamel, Zac Efron, Halle Berry, Hilary Swank, Héctor Elizondo, and many, many more. Like Valentine's Day, the film follows the intersecting events of various characters, all taking place on the titular day.
This film provides examples of:
- Artistic License Cars: When Sam crashes his car into a snow drift, the airbags deploy individually, several seconds after impact, and they stay inflated. In an actual crash, they'd deploy instantly and simultaneously then deflate.
- The Cameo: James Belushi, Cary Elwes, and Alyssa Milano show up in small roles.
- New Year Has Come: As the title suggests, the film takes place on New Year's Eve into the early hours of January 1.
- New Year's Kiss:
- Ingrid and Paul kiss during the New Year celebration after completing all their resolutions.
- When she sneaks off to Times Square to celebrate New Year's Eve despite her mother's wishes, Hailey sees her boyfriend Seth kissing another girl, upsetting her. In reality, Seth was being kissed against his will. Later, Seth explains what happened, and he and Hailey share a real New Year's kiss in secret.
- New Year's Resolution: Ingrid Withers makes a list of things to do before the new year, rather than after it. It appears to be her list from the previous year.
- The Reveal: Several.
- Stan is revealed the be the father of Claire, who shows up at the hospital at the last minute so she can be with her father for his final New Year's Eve.
- Kim is the mysterious woman Sam fell in love with on the previous New Year's Eve, and they finally reunite at the restaurant where they first met.
- Screw the Money, I Have Rules!: The OB-GYN who treats Tess states that she will not agree to perform a C-section just so that they win the contest, and says she already turned down the last couple she spoke with who offered to split the money with her if she would.
- Spiritual Successor: To Valentine's Day. Both films had the same writer-director team and both involve large ensemble casts finding romance on the titular holiday.
- Stalker Without a Crush: Piper's Mom stalks her daughter Piper and her friends all throughout the movie.
- This Is a Competition: The "Maternity Ward" segments involve two couples who, along with several others, are trying to win a cash prize for the first baby born in the new year. It's clear that many of them will do anything to induce labor so that they come out on top.
- Tomato Surprise: Almost everyone in the film is related or connected to each other one way or another.