During Mac's "Science is a Liar Sometimes" demonstration, after he slaps the sign on Galileo, the camera cuts away. When it cuts back, the sign has moved.
When Frank is testifying the Trial Meter board shows that Charlie's gavel moved to a different position under Frank's name, and Mac's moved to the Fence without any explanation why he changed his vote.
When Frank and Dennis come to the bar discussing their accident, Dee tells Frank he does not want to go anywhere near a court room and asks how many unregistered guns are in his car. Pennsylvania has no gun registry. However, he cannot carry a firearm on his persons without a carry permit.
The man sat at the bar continuously holding a glass in his hand is in fact a customer, not a member of the crew.
Before Dennis is rear-ended by Frank, Dennis is listening to his radio and the station identifies itself as KPFN. The series is set in Philadelphia and, as such, the station's call letters would most likely will begin with a W, not a K. Usually call letters of stations in the United States east of the Mississippi River begin with a W and stations to the west begin with a K.