Ricky Gervais, who played Michael Scott's counterpart, David Brent, in the English version of the show, made a cameo in season seven, episode fourteen, "The Seminar" and again in "Search Committee" although "The Seminar" is his only in person appearance as his appearance in "Search Committee" is via video conference only.
I... declare... BANKRUPTCY!
Oscar Martinez: Hey, I just wanted you to know that you can't just say the word bankruptcy and expect anything to happen.
Michael Scott: I didn't say it, I declared it.
In the kitchen, a no smoking sign on one of the cupboards has "Sec. 6404.5" underneath. 6404.5 is the California Labor Code for smoking in the workplace. The series takes place in Scranton, Pennsylvania.