Let's be honest, when Claire is chewed out for running through the cemetery, you half expected the old woman to start shouting "BOO! BOO! BOO!" at her.
Leonard Lobo Seems to have moved his casino business from California to Missouri...and added money laundering to his record, too.
As Himself: Several prominent American cable news personalities appear as themselves commenting on Underwood's actions including Sean Hannity, Rachel Maddow, and Stephen Colbert (in a final appearance in character)
Directed by Cast Member: In addition to playing Claire, Robin Wright has directed seven episodes of the shownote Chapter 23 in season 2; chapters 35 and 38 in season 3; and chapters 42, 43, 48, and 49 in season 4.
Kevin Spacey has been an executive producer for the show for its entire run. Robin Wright also became an executive producer beginning in season 4.
Fake American: English Jayne Atkinson as Catherine Durant; Swedish-American Joel Kinnaman as Will Conway.
Fake Brit: Irish Dominique McElligot as English Hannah Conway.
Fake Nationality: Fake Hispanic: Indian-American Sakina Jaffrey as Hispanic-American Linda Vasquez.
Name's the Same: Rather bizarrely, Doug Stamper is the only character to have the same last name as their British counterpart (Tim Stamper). Similarly, Francis Underwood is the only character to have the same first name as his British counterpart (Francis Urquhart), and Claire also always addresses him as "Francis"; everyone else addresses him as "Frank" because a Southern gentleman named Francis would insist that you call him 'Frank', and a British aristocrat would faint at the idea.
Unintentional Period Piece: The presidency of Donald Trump caused many accusations that the show suddenly seemed completely irrelevant, with its depiction of an overtly evil president suddenly seeming downright quaint next to the real thing.
When Frank Underwood visits Petrov in the Jordan Valley in Chapter 36, the Navy SEAL security team riding in the Hummers with him are all real Navy SEALS that Kevin Spacey worked with on Captain Phillips (on which Spacey served as an executive producer). In particular, the Navy SEAL on his immediate left when Frank steps out of the vehicle is Spacey's actual bodyguard in real life.