Character mistake: Lori said "Lori, let me. It's no big deal." to Jennifer instead of saying "Jennifer, let me. It's not big deal." (00:13:20)
Character mistake: Dan makes a reference to the movie "Planes, Trains, and Automobiles" (the movie he's planning on the family to watch). He starts a sentence saying "by the time John Candy says 'those aren't pillows'." John Candy did not say that line in the movie - Steve Martin did.
Character mistake: Considering she was wearing heeled boots, Ms. Underwood should have either taken her shoes off or at least have had a carpet provided to her if she was going to sing on the competition mat, as her shoes could have torn it. Other than emergency medical professionals, anyone who is going to step on the mat should remove their footwear.
Character mistake: When the sergeant's partner gets shot and Chen calls it in, she says he got away in a black Buick, but the car was a Honda Civic. (00:10:52)
Welcome to the Great Beyond - S7-E4
Character mistake: Calvin is cleaning a gas BBQ grill, and they refer to it as a smoker. (00:00:26)