Marco Polo - S1-E4
Factual error: The story is set in 1289, when Marco Polo was anxious to leave China against Kublai Khan's wishes, so what's Polo doing on the Pamir Plateau?
Factual error: Robin, Laney, and Kelly decide to move into the loft that used to belong to Courtney. When Courtney lived there, it was set up like a loft. It was one large room that was sectioned off into a bedroom, living room, and kitchen. On the 9/29/06 episode, they show Robin, Laney, Kelly, and Patrick in the loft and suddenly it's much larger and seems to have separate bedrooms for all three girls. Why didn't the show have the three girls move someplace other than Courtney's loft or why didn't the show make up for the mistake by having the loft expanded or something similar?
Wife Killer - S3-E17
Factual error: The Baker City Herald's office door misspells the word "personnel" with a sign reading, "Authorized Personel Only." Pretty poor editing for a newspaper office. (00:29:25)
It Crawled Out of the Woodwork - S1-E11
Factual error: When the energy monster kills his entire research staff by stopping their hearts, Dr. Block brings them all back to life (with their minds and personalities intact) by installing pacemakers. But when the heart stops functioning, brain death occurs within minutes. For this to work, he'd not only have to operate on several people simultaneously, he'd also have to be the fastest heart surgeon on Earth. (00:40:00)
Factual error: It isn't catering to American tourists (the guests are from all over the globe), but the Posada Angelita Hotel in Mexico has only American flags out front. (00:03:15)