The Legend of Tennessee Moltisanti - S1-E8
Revealing mistake: Christopher is in the pastry shop. When his head is turned to the left, an earpiece can be seen in his ear. (00:17:35)
The Legend of Tennessee Moltisanti - S1-E8
Other mistake: Christopher Moltisanti fires a 2nd warning shot at a baker. The shot is fired at the floor but a mirror up on the wall behind the baker shatters. In the next shot and all subsequent shots, the mirror is undamaged. Now this gun was a prop gun, supposedly modified to fire blanks. How did the mirror shatter? It couldn't have been part of the planned shot. Christopher was aiming at the floor. (00:18:41)
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)
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.