Tony could not shatter A.J.'s windshield like he did. They do not shatter like side windows do. There is a sheet of plastic in-between two sheets of glass as a safety feature.
When Carmela and Rosalie are in the restaurant in Paris, the telephone number on the delivery truck that pulls up in the background has a phone number on it, but it's not a Parisienne phone number.
Referring to Carnac the Magnificent, Tony mistakenly calls Frank "Carnac the Great". However, this is on purpose.
Some of the paragraphs in the newspaper article regarding Vito are repeated a couple of times.