Dwight reveals a graph similar to a family tree format with all of the employees working at Dunder Mifflin. Creed Bratton's name is in quotation marks, suggesting an alias or fake name due to his disingenuous personality.
The Emergency Disaster Mode that Dwight proposes to discipline Stanley is the same takeover method used by Adolf Hitler upon taking power. The primary emergency in that case was the burning of the Reichstag. Hitler, too, promised to return power to the Chancellor after being granted the power, but of course did not end up conceding after all.
Pam's full name is Pamela Morgan Beesly.
Angela Kinsey was pregnant during the filming of this episode, her weight gain is noticeable from face shots. You can also see that she carries a very large purse to cover herself in one shot. You get a brief shot of her belly when everyone is outside helping pull Michael's face out of the concrete.
In the cold open, in a scene that was deleted (available on the extended version), Meredith trips into Michael's face-hole, furthering the running gag of Meredith getting hurt.