Cameron tells Chase she didn't plan on her husband dying. However, in "Acceptance" in Season 2, she told Wilson that she met her husband just after he was diagnosed incurable cancer, so she knew he was dying.
When House phones Foreman from the morgue, his phone is in his left hand and he starts speaking. When the camera cuts immediately back, it's in his right hand.
When House's prescription bottle for his sleeping pills zolpidem is shown, the instructions incorrectly say "take 1 capsule 3 times daily for 10 days until all taken." The medication, which also is not made in the strength listed on the bottle, is taken once at bedtime.
When Chase licks Karamel, he tastes the strawberry and a few seconds later begins suffocating from anaphalaxis. However, anaphalaxis does not hit a person that quickly.
As per information at Kutner's Fox web page, Kutner is 33 during the events of this episode. However, when Foreman was calling the EMTs from Kutner's apartment, he said, "Male, 28 year-old."
Trivia: Per the Fox web site, the events of this episode begin on or about April 2, 2009.
When House is testing whether Kutner is superstitious, the position of the salt cellar changes between shots.
When House sits in his corner chair at the episode's end, he places two toy cars on the footstool: a purple one at left and a yellow one at right. When he jumps up, the cars can be seen to have flipped positions. A further camera angle of him reaching to touch the seat shows them again in this position before a final glimpse of the cars shows them returned to their original order.
Trivia: Dr. Cuddy is 38 years old.
Trivia: Dr. House's ringtone is Mmmbop by Hanson.
After House asks Wilson which tie he should wear, Hugh Laurie makes an English slip: he pronounces "St. Sebastian" as "Seb-ast-I-an," rather than the American pronunciation of "Se-BAS-chen."
When Wilson confronts House in his office about Cuddy's hypocrisy, just prior to his Eureka moment (approx. 37mn into the episode), Hugh Laurie holds his watch so that the time is clearly visible. In between sentences, the watch jumps from '10:34' to '1:12'.
In the scene after House wakes up in Wilson's office, we see Kutner calling House on a phone on the meeting room table yet it's the first time that phone is seen and there is no outlet near the table to connect it. Also the phone screen doesn't show the call progress or the dialed number which is a standard feature on that kind of phone.
When House realizes his cane is missing, on one shot a security guard passes from left to right yet on a reverse angle shot seconds later we see him passing right to left.
In the kitchen scene at the beginning of the episode, Dana actually chops the onion the opposite way of how Chef Anthony demonstrated it. In his demonstration Chef Anthony cut across the onion to make slices (and said cut the onion lengthwise to halve it and then cut across), but Dana sliced the onion from top to root (lengthwise).
Trivia: Thirteen's medical trial # is 213.
Trivia: Taub and Thirteen are watching Fletch (1985) with Chevy Chase as they administer the fake irradiation procedure.
Whenever Cuddy talks about her appointment with DYFS (Division of Youth and Family Services), she calls it D-Y-F-S, pronouncing each letter of the acronym. The administrator of a New Jersey hospital, or anyone else that deals with that state agency, would refer to it as "Dye-fiss," as if the letters spell an actual name.
Trivia: House has a rubber duck next to his bath.
It is clear that the baby Cuddy is holding throughout most of the episode is a doll.