Character Name : Kate

Original Name : Olivia Wilde

Gender : Female

Character Name : Luke

Original Name : Jake Johnson

Gender : Male

Character Name : Jill

Original Name : Anna Kendrick

Gender : Female

Character Name : Chris

Original Name : Ron Livingston

Gender : Male

Character Name : Dave

Original Name : Ti West

Gender : Male

Character Name : Gene Dentler

Original Name : Jason Sudeikis

Gender : Male

Character Name : Mike

Original Name : Mike Brune

Gender : Male

Character Name : Frank

Original Name : Frank V. Ross

Gender : Male

Character Name : Man with Fiance

Original Name : Michael Gaertner

Gender : Male

Character Name : Fiance

Original Name : Kristin Davis

Gender : Male

Character Name : Jim

Original Name : Jim Ciback

Gender : Male

Character Name : Amy

Original Name : Alicia Van Couvering

Gender : Female

Character Name : Eli

Original Name : Michael Zeller

Gender : Male

Character Name : Angry Car Guy

Original Name : Joe Swanberg

Gender : Male

Character Name : Partygoer (uncredited)

Original Name : Roberta Chung

Gender : Female