Elenco

• Owen Wilson — John Beckwith
• Vince Vaughn — Jeremy Grey
• Christopher Walken — Secretary William Cleary
• Dwight Yoakam — Mr. Kroeger
• Rebecca De Mornay — Mrs. Kroeger
• David Conrad — Trap
• Diora Baird — Vivian
• Larry Joe Campbell — Best Man
• Rachel McAdams — Claire Cleary
• Isla Fisher — Gloria Cleary
• Jane Seymour — Kathleen Cleary
• Keir O'Donnell — Todd Cleary
• Bradley Cooper — Zachary 'Sack' Lodge
• Ron Canada — Randolph
• Will Ferrell — Chazz Reinhold
• Norma Michaels — Old Irish Woman
• Ellen Albertini Dow — Grandma Mary Cleary
• Jennifer Alden — Christina Cleary
• Henry Gibson — Father O'Neil
• Geoff Stults — Craig Garthe
• Kathryn Joosten — Chazz's Mom