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.
The Sopranos (1999)
1 character mistake in season 4
Starring: James Gandolfini, Lorraine Bracco, Edie Falco, Michael Imperioli
Continuity mistake: Tony's hair length alternates between a short buzz cut and longer in different shots in the scene where Sil, Paulie and Chris visit him after his mother dies.
Christopher Moltisanti: Whatever you do, do not engage Silvio in conversation.
More trivia for The Sopranos
Question: During a restaurant scene Drea deMatteo plays a hostess. She seats the Sopranos, but does not seem to know them. Was she picked to play Adriana after this episode?
Answer: No need to go that far for another example. There's also the famous Gino from the episode where Christopher shoots the seller in a bakery, which miraculously becomes Vito.
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