Knight in White Satin Armor - S2-E12
Continuity mistake: When Janice shoots Ritchie in the chair, when he falls back, you can see a hand underneath push the chair.
Continuity mistake: Tony, Carmela and AJ are meeting with AJ's college tutor. Partway through the meeting AJ is asked to leave. When AJ stands up he is wearing beige coloured trousers, but as the shot changes to show him walking out the door, he is now wearing black trousers. (00:15:30)