Christopher Walken
Secretary Cleary
Rachel McAdams
Claire Cleary
Jane Seymour
Kathleen Cleary
Ellen Albertini Dow
Grandma Mary Cleary
Keir O'Donnell
Todd Cleary
Henry Gibson
Father O'Neil
Rebecca De Mornay
Mrs. Kroeger
Jennifer Alden
Christina Cleary
Frank Ray Perilli
Old Italian Man
Patricia Place
Old Italian Woman
Chao-Li Chi
Old Chinese Man
Norma Michaels
Old Irish Woman
Noel De Souza
Old Indian Man
Ned Schmidtke
Frank Meyers
Dylan James Turner
Bratty Kid
Larry Joe Campbell
Best Man
Mark Duane Anderson
Secret Service Agent
Irene Roseen
Elderly Woman
Kathryn Joosten
Chazz's Mom
Karen Miller
Chazz's Girlfriend
Tanaya Nicole
Woman at Jewish Reception
Cindy Taylor
Girl at Irish Wedding
Melanie Hawkins
Girl Who Cries
Summer Altice
Girl Who Cries
Lisa Beach
Wedding Planner
Lovelynn Vanderhorst
Wedding Planner
Phyllis Samhaber
Woman at Table
Al Cerullo
Helicopter Pilot
Will Ferrell
Chazz Reinhold (uncredited)
James Carville
James Carville (uncredited)
John McCain
John McCain (uncredited)
Lindsay Schoneweis
Woman in Hat (uncredited)
Kelsey Wedeen
Bridesmaid (uncredited)
Brian T. Lynch
Funeral Mourner (uncredited)
