When Jenny slams on the brakes on her car, the car stops in the middle of the street on the pavement. After she kicks Will out of the car, the car is off the street on the dirt shoulder.
When a disguised Jack is intimidating Will, he gives Sydney's address as "4250 Cochrane Street". An establishing shot of Sydney's home soon thereafter shows a duplex with house numbers of 1721 and 1731.
Speaking to the boat captain, the subtitles tell that Sydney is speaking Russian, when in fact she is speaking Swedish
Vaughn incorrectly identifies Milo Rambaldi as being from the 16th Century. Rambaldi has been previously established as having lived in the 15th.