Continuity mistake: Tony gets out of the car near the start and there is no glass on the floor, when he calls Christopher over, broken glass on the ground has appeared.
Continuity mistake: Towards the end of the episode Carmella is reading a book on real estate. When a close up of the book is shown, she is at the beginning of chapter 1, yet when the camera angle changes she is about halfway through the book.
The Strong, Silent Type - S4-E10
Continuity mistake: Tony gives Corrado a glass of wine, holding it from the sides. A frame later his hand is on top of the glass.
Continuity mistake: Ralph's left ear is pierced. The prop of his cut head is not.
Continuity mistake: When Artie visits Tony, he runs to the bathroom. Later in the scene, Artie and Carmela help Tony up to go to the bathroom, but Artie says, "Where're we headed?" as though he didn't know where the bathroom was.
For All Debts Public and Private - S4-E1
Continuity mistake: When Chris places the twenty dollar bill on the fridge, there's a picture of a fat kid next to it. Depending on the angle, a paper covers/not part of the photo.
Christopher - S4-E3
Continuity mistake: When Gabriella confronts Father Phil about the public speaker, the cannoli that Father Phil has in front of him changes halfway through the scene.
Revealing mistake: Jackie is shot in the head, and not only does his head not burst, but the snow mount in front is already covered all over in blood before he falls.
Other mistake: The set up of Dr Melfi's office makes no sense. Her office is in a building with other doctors,yet there's windows on the right side of her office where another doctor's office is.
Continuity mistake: While Tony sits with his nephew, the peanut butter jar moves closer to the remote control between the first and second shot.
For All Debts Public and Private - S4-E1
Continuity mistake: When Tony Jr. reads the newspaper, his part of the table changes completely: The napkin changes position, the orange juice comes closer to his arm, the spoon in the bowl changes positions, and a mug in front is replaced for a load of papers. The position of his thumb also swaps from being beneath a photo, to on top of it depending on the angle.
University - S3-E6
Continuity mistake: When AJ is having breakfast, the syrup bottle moves around by itself between shots.
Knight in White Satin Armor - S2-E12
Revealing mistake: Richie is breathing on the floor, despite having been shot to death. (00:46:58)
Character mistake: During an argument between Tony and Carmela, they mention her ring, given to her in earlier episode. They refer to it as an emerald. It is a sapphire.
Answer: That's not Jimmy, just a look-a-like. Jimmy's short and stout, the guy in "Christopher" episode is tall and medium built. The hair is also different.