Fake Nationality: Foreigners are generally played by American actors. This was also once Double Subverted — they visit England, and the guest star of the week is Charles Shaughnessy, who actually is British — but by the end of the episode, the character has been revealed to be Belgian. Go figure.
In one episode, it's revealed that London is at least part Thai. Her actress, Brenda Song, is of Laos descent.
Ed Begley, Jr. as the mayor of the Martin family's ancestral hometown in Sweden.
Charles Shaughnessy as the Scotland Yard detective charged with finding a stolen Sherlock Holmes manuscript who was, in fact, the thief, a Belgian collector posing as a detective.
Captain Steubing from The Love Boat in the episode "The Wrong Stuff" IMDb also claims that he appeared in "Mom and Dad on Deck", but that may be an error.
Charo as Esteban's mother in the episode "Mother of the Groom".
Kathy Lee Gifford as a has-been model turned modeling agent from hell in the episode "Model Behavior".
Erin Cardillo who plays Emma Tutweiller, played Esme on the soap opera Passions.
The one, the only George Takei as London's great-great....great-grandson and future Expy Rome Tipton.
Andy Richter as Brother Theodore, leader of the non-religious monastery Cody joins.
Fake Russian: The episode "Das Boots" had Sasha Matryoshka, a Russian junior chess champion played by Cody Kennedy, who's of Russian ancestry, but otherwise American as apple pie.
