The Dunder Mifflin staff head to Niagara Falls for Jim and Pam's wedding, with the understanding that her pregnancy is a forbidden discussion topic, but Jim's slip of the tongue prods Michael to attempt damage control.
Quest roles:
Leslie David Baker(Narrator), Brian Baumgartner(Kevin Malone), Angela Kinsey(Bachelorette #3), Craig Robinson(President Jackson), Ellie Kemper(Erin Hannon), Mindy Kaling(Kelly Kapoor), Kate Flannery(Man / Bachelorette #1), Phyllis Smith(Bachelorette #2), Oscar Nunez(Speed Skater), Paul Lieberstein(Hostage #4), Robert R. Shafer(Bob Vance), Robert Pine(Gerald Halpert), Anna Camp(Penny Beesly), Tug Coker(Pete Halpert), Michelle Gunn(Hotel Receptionist), Blake Robbins(Tom Halpert), Perry Smith(Betsy Halpert), Kelen Coleman(Isabel Poreba), Rick Overton(Mr. Beesly), Peggy Stewart(Sylvia), Linda Purl(Helene Beesly), Creed Bratton(Cherokee Jack), AlgeRita Wynn(Cynthia), Randy Cordray(Ship's Captain), Deena Adar(Woman at Bar), Nicholas Shaffer(Hotel Manager), Daniel Hepner(Groomsman (uncredited)), Charlotte Daniels(Flower Girl), Chealy Jean(Waitress), Ken Kreps(The Minister), Sandra L. Feeley(Cindy Halpert), Julie David(Bridesmaid (uncredited)), Julien Zuccolin(Florida Cousin (uncredited))