Samuel L Chang (Dwight) when talking to Michael Scarn (Michael) about the NHL All Star game makes two factual errors. He states that the game will have a halftime, which hockey games do not. He also calls the venue of the hockey game, a stadium when in fact it is an arena.
When Michael Scott is being shot in the cold opening his attacker fires the revolver nearly two times as many times as would be possible without reloading. This is probably an joke about this common goof in many action films.