New Year's Eve

Hilary Swank

As Claire Morgan

Robert De Niro

As Stan Harris

Michelle Pfeiffer

As Ingrid Withers

Josh Duhamel

As Sam

Sarah Jessica Parker

As Kim Doyle

Zac Efron

As Paul

Lea Michele

As Elise

Ashton Kutcher

As Randy

Halle Berry

As Nurse Aimee

Jon Bon Jovi

As Daniel Jensen

Katherine Heigl

As Laura Carrington

Seth Meyers

As Griffin Byrne

Jessica Biel

As Tess Byrne

Til Schweiger

As James Schwab

Carla Gugino

As Spiritual Dr. Morriset

Cary Elwes

As Stan's Doctor

Sofía Vergara

As Ava

Héctor Elizondo

As Kominsky

Abigail Breslin

As Hailey Doyle

Ludacris

As Brendan

Sarah Paulson

As Grace Schwab

Alyssa Milano

As Nurse Mindy

Jake T. Austin

As Seth

Katherine McNamara

As Lily Bowman

Nat Wolff

As Walter

Yeardley Smith

As Maude

Ryan Seacrest

As Self

Michael Bloomberg

As Self

Fiona Choi

As Balinese Woman - Resolution Tour

Jim Belushi

As Building Super

Mara Davi

As Mika

Cassidy Reiff

As Piper

Russell Peters

As Chef Sunil

Serena Poon

As Chef Ming

Common

As Soldier

Jackie Seiden

As Bride Trish

Joey McIntyre

As Groom Rory

Beth Kennedy

As Piper's Mom

Larry Miller

As Harley (segment "Ahern Party")

Christine Lakin

As Waitress Alyssa

Shea Curry

As Wendy

Sandra Taylor

As Patty

Matthew Broderick

As Mr. Buellerton (uncredited)

John Lithgow

As Jonathan Cox (uncredited)

Juliette Angelo

As Sadie

Mary Marguerite Keane

As Pet Adoption Clerk

Barbara Marshall

As Head Nurse Helen

Lillian Lifflander

As Mrs Lifflander

Penny Marshall

As Penny Marshall

Cherry Jones

As Mrs Rose Ahern

Charlotte Marshall-Fricker

As Caring Teenage Girl (segment "Resolution Tour")

Michael Mandell

As Murray (segment "Resolution Tour")

Patrick Reale

As Times Square Cop (segment "Resolution Tour")

Amar'e Stoudemire

As Party Dancer

Matthew Walker

As Engineer Douglas (segment "Time Square") (as Matt Walker)