Ben Stiller - Reuben Feffer
Jennifer Aniston - Polly Prince
Philip Seymour Hoffman - Sandy Lyle
Debra Messing - Lisa Kramer
Alec Baldwin - Stan Indursky
Hank Azaria - Claude
Bryan Brown - Leland Van Lew
Jsu Garcia - Javier
Michele Lee - Vivian Feffer
Bob Dishy - Irving Feffer
Missi Pyle - Roxanne
Judah Friedlander - Dustin
Kevin Hart - Vic
Masi Oka - Wonsuk
Kym Whitley - Gladys (as Kym E. Whitley)
Amy Hohn - Cheryl
Nathan Dean - Mitch
Cheryl Hines - Catering Manager
Caroline Aaron - Wedding Coordinator
Christina Kirk - Party Hostess
Todd Stashwick - Security Officer
Robb Skyler - Basketball Player
Edward Conna - Basketball Player (as Eddie Conna)
Bruce Nozick - Executive Chef
Mark Adair-Rios - Cake Decorator
Michael Shamberg - Van Lew Executive
Nick Jameson - Van Lew Executive
Richard Willgrubs - AFLAC Executive
Richard Assad - Indian Waiter
Ronald Hunter - Peanut Vendor
Rabbi David Baron - Rabbi
James DuMont - Larry
Nicholas Benevento - Wedding Photographer
Jeffrey Ross - Wedding Band Leader
Mitch Silpa - J.C. Superstar Director
Robert M. Koch - Partygoer
Mark Ramos Nishita - Salsa Band Leader
Theodore Shapiro - Hector
Claudia Tenorio Gonzales - Salsa Singer
Carmit Bachar - Salsa Dancer
Marco De La Cruz - Salsa Dancer
Alison Faulk - Salsa Dancer
Tomasina Parrott - Salsa Dancer
Gustavo Vargas - Salsa Dancer
Allen Walls - Salsa Dancer
Rudy Zalez - Salsa Dancer
Paul Blazeak - Salsa Band
Richard Barron - Salsa Band
George Balmaseda - Salsa Band
Leslie Drayton - Salsa Band
Jose Espinosa - Salsa Band
Walter Miranda - Salsa Band
Alfredo Ortiz - Salsa Band
Phillip Ranelin - Salsa Band
Michael Wong - Salsa Band
Adrienne Ash - J.C. Superstar Singer
Christine Barger - J.C. Superstar Singer
Toni Blair - J.C. Superstar Singer
Eugenia Care - J.C. Superstar Singer
Mari Endo - J.C. Superstar Singer
Mike Fujimoto - J.C. Superstar Singer
Gustavo Hernandez - J.C. Superstar Singer
Gustavo Hernández - J.C. Superstar Singer
Monique 'Nikki' Jongs - J.C. Superstar Singer
Anjulie Marriott - J.C. Superstar Singer
Jeffrey Sherrard - J.C. Superstar Singer
Ryan Cross - J.C. Superstar Band
Anthony King - J.C. Superstar Band
Vernon Neilly - J.C. Superstar Band
Stuart Silverstein - J.C. Superstar Band (as Stu Silverstein)
rest of cast listed alphabetically:
Cali Ross - Maid of Honor (uncredited)
Ator Tamras - Bridesmaid (uncredited)
David Wain - Wedding Videographer (uncredited)
Brian W. Wallace - J.C. Superstar Singer (uncredited)
