Continuity mistake: When Meadow is looking mournfully at the Scrabble board, she sees that Jackie laid "the" using the letter e from "oblique" that she laid. However, when they were playing the game, the only word after oblique that Jackie laid before leaving was "ass".
Continuity mistake: Christopher is trying to start a fire with sticks and has a cigarette in his mouth. He starts to go back into the van with the cigarette in his mouth but in the next shot the cigarette is gone and he is rubbing his hands together.
Visible crew/equipment: Paulie and Christopher convince Tony to head out and try to locate them, and to bring them food as well as shoes for Paulie. In the wide shot, just as Tony puts on his shoes and tells Gloria, "I gotta go," there's a red T-mark on the wood floor at the lower left side of the screen.
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.
Visible crew/equipment: When Jackie and his crew get to the poker game, an actor's red tape mark (double toe box type) is visible on the floor near the poker table. This will be where Carlo Renzi stands with his shotgun.
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.
Visible crew/equipment: When AJ tries on his new military school uniform, he's pressured to also put on the hat. Then, after AJ looks at himself in the mirror, just as he walks back toward his mother, the reflection of the boom mic becomes visible in that mirror directly over Carmela's reflection, at the right side of the screen.
For All Debts Public and Private - S4-E1
Continuity mistake: Tony is clean-shaven at the doctor's office with Uncle Junior in the lobby and when he makes eyes with the nurse in the hall. However, steps away in the exam room, Tony now has a five o'clock shadow. (00:11:11 - 00:11:32)
For All Debts Public and Private - S4-E1
Continuity mistake: Tony throws the newspaper at his son and it lands with a corner folded on the cereal bowl. From the opposite angle it is laying straight on the table.
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.
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.
Continuity mistake: During FBI questioning, Adriana vomits on the conference table. Bureau Chief Cubitoso is sitting to her left, and in the scene, he has no vomit on his clothes or face. However, in the next close-up shot, he has vomit on his shirt and face. (00:51:23)
Continuity mistake: During FBI questioning, Adriana vomits on the conference table. Agent Deborah Ciccerone is sitting directly in front of her, and in the scene she gets no vomit on her clothes or body. But in the next close-up shot, she has very long vomit on her blouse and jacket, despite sitting across from Adriana. (00:51:23)
Revealing mistake: When Patsy knocks down the black guy with the iron pole, the pole breaks in half like a piece of plastic. When it cuts, the pole is intact.
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: A different horse is used for close-ups and race shots; you can tell by looking at the white patch on Pie-O-My's head, which is much bigger in the close-ups.
Continuity mistake: While standing outside the horse's stall, Ralphie's arms go from being at his sides, to folded across his chest throughout the whole scene.
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.