To get married in the state of New York you need to, in person, apply for a marriage license. It is not possible to get married a couple of minutes after proposing like Russel and Timmy supposedly did.
Timmy stated that he has been a citizen for ten years during Season 5 but the finale has him marry Russell because Timmy's temporary work visa is about to expire.
Adam stole Jeff's steak by pretending to be him to the delivery man but Adam accidentally signed his own name instead of Jeff's. Despite Adam signing his own name he still got the steak but there is no explanation why the delivery man gave it to him.
After Adam tackles Jennifer to stop her from eating a grape that fell on the rug, a subsequent shot shows the bowl of grapes turned over next to the sofa and several grapes spilled. But when they both run away mere seconds later, the bowl is seen to be upright, filled with grapes, and back where Jennifer had it on the floor.
In the office break room, the glass bottle Russell puts down on the table rotates by itself throughout the scene. Noticeable by the direction the label faces.
David Spade's character, Russell Dunbar, gave out his twitter address This is a real Twitter account, which bills itself as "The Official Twitter Page of Russell Dunbar", and has been linked via tweet from the official Twitter account for the show itself.
This episode is set immediately after season four, episode ten's "The Surrogate", continuing from the final scene which was refilmed. This breaks continuity of the last three season four episodes.
Audrey and Jeff have been married for 14 years.
Timmy's Indian name is Timir.
Jeff is allergic to strawberries.
Brian Dennehy, who plays Jeff's father in this episode, played David Spade's character in Just Shoot Me, Dennis Finch's father in the series.
Audrey and Jeff have been married 12 years.
Aurdery works for Inner LivingMagazine.
Goof: Initially Audrey states that the lady that lived in 9A died. Later when talking with Mrs. Westlin, Audrey stated that Adam and Jennifer live in 9A.
Audrey is from Nebraska.
Jeff wrested in high school.
Jeff's last name is Bingham.
Adam is an only child. Russell is 42 years old.
Jeff minored in Psychology.
Before the opening credits when Jeff is talking a couple sits down in the background. In the next scene we see the same couple go to sit down again in the same place.
In one of the last scenes of "Central Park", you can see palm trees in the background. However, Rules of Engagement is in New York, not Los Angeles, where it is aired.