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.
Irregular Around the Margins - S5-E5
Continuity mistake: When Tony and Ade are playing darts, Ade throws a '3' and a bulls eye. When it cuts the darts have moved to '20' and '4'. (00:13:30)
Visible crew/equipment: When the camera lifts up on the last shot, you can see a lighting screen reflected on the right glass wall.
Continuity mistake: The amount of bites out of the slice of pizza Chris is eating changes between shots.
Continuity mistake: When Paulie Walnuts is talking to Tony in the hospital room, the close up of the heart monitor shows the heart rate in highlighted text, with the word "Tachycardia" flashing. In the shot from Paulie's point of view, the heart rate is in normal text and "Tachycardia" is not flashing.
Continuity mistake: When Chris is talking to Jon Favreau in his hotel room, Chris leans across Jon and grabs a pad from the end table next to him. In the next shot the pad is on the table again, then disappears.
Cold Stones - S6-E11
Deliberate mistake: Tony smashes AJ's front windshield of his Nissan SUV one time with a plastic sports helmet and it leaves a hole 4 times the size. Not only is the scale size of helmet to hole incorrect, but front vehicle windshields don't shatter like that. Modern windshields are made of laminated safety glass, which consists of two curved sheets of glass with a plastic layer laminated between them for safety, and bonded into the window frame. It would've taken many impacts to cause such a hole, not one hit. (00:49:00 - 00:49:45)
Unidentified Black Male - S5-E9
Continuity mistake: Carmela's lawyer is holding a pen with his right hand. From a different angle, the pen is lying on a paper on the desk.
Revealing mistake: In at least one scene at the Bada Bing, the neon sign reading "Satin Dolls" can been seen reflected in the mirrors. Satin Dolls is the the name of the real strip bar where the Bada Bing scenes are filmed.
Knight in White Satin Armor - S2-E12
Revealing mistake: While Christopher and Furia are dismembering Richie Aprile on a meat saw, you can see that the blade of the saw is still, but the blood is splattering all over the place and you can hear the sound of the meat saw cutting through flesh. (00:49:55)
Continuity mistake: During the scene in the office of Bada Bing, Pauli, Christopher, Tony, Silvio and Pussy are all together and the TV is on. Pussy is reading something and Christopher is lifting weights. In between shots, the weights change from Chris's right arm to his left and back again. It could be argued that he changes arms when the camera is off him, but there is one instance where it definitely happens too quickly for this to be the case.
Continuity mistake: The size of the hole made by Tony Blundetto on the wall keeps increasing and decreasing all the time.
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.
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".
The Legend of Tennessee Moltisanti - S1-E8
Continuity mistake: When they drive in the Lexus, around 33 min into the scene, you can see the headrest on the driver's seat moving up and down as the shot changes from him to Tony and back. Happens several times. (00:32:55)
To Save Us All From Satan's Power - S3-E10
Continuity mistake: When Tony sees Jackie Jr. getting a lap dance, the dancer has her top pushed up. After Jackie pushed her off and she moves past Tony, her top is down without having time to move it. (00:29:10)
The Fleshy Part of the Thigh - S6-E4
Continuity mistake: The card with the proverb stuck on the billboard keeps swapping positions depending if the angle is medium or close.
Irregular Around the Margins - S5-E5
Visible crew/equipment: Visible crew reflected on car's mirror when Chris opens the door.
Irregular Around the Margins - S5-E5
Continuity mistake: When the car that Tony and Ade are driving flips over, the back lights on the car die out. But in the last shot of the car the back lights are back on.
Audio problem: In the first long shots of Visiting Day playing at the club, the lead vocal is heard, but the singer is standing well back from the mic and does not appear to be singing.
Answer: Yup, just like Nicholas Lea was chosen to play Alex Krycek on the X-files after showing up on 1 episode as a different character.
Grumpy Scot