Continuity mistake: Michael's scarf is above his collar in the first shot, but moments later, seemingly without moving, his scarf is tucked below his collar. (00:06:40)
Lecture Circuit: Part 2 - S5-E15
Continuity mistake: When Jim and Dwight are talking about the activities for Kelly's party, Dwight is attempting (horribly) to blow up a silver balloon. Just after Jim finishes reading The List of proposed activities, Dwight says, "You're right, forget horse hunting, it's stupid." Immediately after he says this, the shot changes and he is now holding a brown balloon. (00:16:30)
Baby Shower - S5-E3
Continuity mistake: When Jan lets Michael finally hold Astrid, she has a pacifier. When Michael gives her to Phyllis, Astrid's pacifier is gone.
Continuity mistake: When Meredith's hair catches fire, we never see her face (as it's a stunt double). After Dwight uses The Fire extinguisher on her, the shot cuts (although she is still in the frame) and her hair is different, as it is now the original actor that plays Meredith. (00:05:50)
Answer: In the 2007 episode "Ben Franklin" when Jim is talking to Pam there is a candy bar with a purple wrapper that says "Picar-" I assume picaroon, it's hard to see past Pam. I found this trying to investigate what that candy bar is lol.