At 40:48, announces that they "All need a drink" and digs two bottles out of Meredith's bottom drawer. In the same sequence at 40:53, there are clearly two completely different bottles of liquor with pouring spouts sitting on the corner of the reception desk.
Jim states that he bikes to work to save gas. Yet, he lives with Pam who drives to work.
Pam's mural is supposed to be for the Irish Cultural centre, but the flag she painted has the pole next to the orange stripe, meaning it's actually the flag of the Ivory Coast (orange white green) instead of Ireland (green white orange).
Dwight states that Jim was the best man at his wedding when Jim in fact passed this role over to Michael Scott before the ceremony occurred. Yes Jim did play the role of "bestest mench" but was not the best man in the wedding.
The final two episodes are set a year apart, but Angela's son Phillip, who is a toddler, is the exact same size in both.
In the opening when Dwight is driving we see several palm trees go by. This is supposed to be taking place in Pennsylvania.
Nellie states that she is happy to be back for the interview panel yet she is nowhere to be seen during the actual interview.