Season 2 - Episode 15 Timestamp: 41:24 Dr. Cameron hands money to Dr. House, but a Canadian $20 bill is amongst the bills. [This is not trivia, and character mistake.] Corrected by Duff "King Of Beers" Mckagan

At the end of the Season 3 premiere, House breaks into Wilson's office and writes himself a prescription for Vicodin with Wilson's prescription pad. Vicodin is a Schedule III controlled substance, which means that a pharmacist requires verbal authorization from the prescribing doctor or his staff to dispense it to a patient, even another doctor, making the prescription useless to House, which he should know. [Actually, it isn't often verified (scary, I know). I am a paramedic and work at a hospital and no one ever questions the ER docs who write narcotic prescriptions. They simply verify that it is an actual doctor.] Corrected by shortdanzr

Cameron, Chase and Foreman frequently perform MRIs, CAT scans and regular x-rays. In order to do that you need to be a radiologist, which none of them is. [When you go to med school, most of the time you are taught HOW to do these procedures, you just don't do them usually. Doesn't mean they don't know how not to. Besides most of these test are done by radiology TECHNICIANS nowadays (with only a few months of schooling sometimes.)] Corrected by shortdanzr

Chase, Foreman and Wilson wear ties almost all the time. Any doctor working with infecteous diseases knows that ties are huge bacteria herds and that doctors should absolutely not wear them. In fact, most hospitals forbid their doctors to wear ties. While some doctors may not know this, Chase, Foreman and Wilson work closely with House, who is an expert on the subject and would most definitely know about it. [Just because they know it shouldn't be there does not make it a mistake. I am a paramedic and I can tell you a LOT of things occur that we know SHOULDN'T happen. And I know MD's and RN's with ties, and long finger nails and long hair (unbound) all the time.] Corrected by shortdanzr

Chase is 26 years old in season one. In season two he's 30. [It's common practice for actor's age to vary regardless of real life.] Corrected by shortdanzr

Several times throughout the show, notably in episode 12 of season 4, there is a wheelchair in the room with the MRI machine. MRI machines use very powerful magnets with strong magnetic fields: a chair with that much metal would almost certainly get sucked into the machine or at the very least pose a danger of getting sucked in and harming the patient. MRI machines are always kept on (it can costs thousands to turn them off and on), so it's not like they wheeled her in and then moved the chair before turning it on. You can watch a video of what happens when chairs get too close and how strong the magnets in these machines really are here: http://youtube.com/watch?v=4uzJPpC4Wuk. [Non-ferrous metals are not attracted by magnets. The wheelchair could be made out of any non-ferrous metal.] Corrected by wizard_of_gore

Chase tells the two boys that he's a doctor treating Gabe Riley. That's a direct violation of his confidentiality, which no doctor would make. [This show requires some suspension of disbelief, as all of the doctors, including House, routinely violate protocol, not to mention the law, as when they break into peoples houses.] Corrected by wizard_of_gore

In this episode we learn that Chase is 26 years old. Considering that he's studied to become a priest, gone through four years of college, four years of med school, two years as an intern, four years as a resident and that he's worked for House for at least a year, that means he graduated high school at the age of 10 (if not earlier). [Chase could have graduated high school at 17. Then graduated undergraduate in 3 years. 4 years of medical school and 2 as a resident. (You do your internship while in medical school). Plus there are some colleges that do a combined undergraduate/graduate program that lasts 6 years. He could have studied as a priest as an undergrad.] Corrected by shortdanzr

The show runs in approximately real time. "The Socratic Method" (1x06) is set around Christmas. Several characters note that it's House's birthday (although the exact date isn't specified). In the S2 finale, "No Reason" (2x24) House is wearing an admissions bracelet after being shot, and it reads "DOB 06-11-59." [As revealed later in the S2 finale, everything that happened since House got shot is an hallucination, so it's possible that the DOB on his bracelet would be wrong.]

14 minutes and 33 seconds into chapter 2, the camera operator and camera can be seen in a reflection on the glass wall on the right side of the frame. [I just watched that episode, and I didn't see any part of the camera crew. If it is visible, it's only visible by freeze-framing, and thus not a valid mistake.]

The episode begins with the patient in bed with his girlfriend. When she straddles him, we can see that her underwear is still on. A second later, they begin having sex without her ever removing or lowering them. [She needn't remove or lower them, she simply pulls aside the gusset of her knickers and away you go.]

When the episode starts Dan is playing lacross for a team called the Tartans. Towards the end the team is called the Comets. [It's a completely different team. Not a mistake.]

When House gets called back into work by Cameron it is almost midnight, as stated by Cameron. House then goes up on the roof, where the sun is shown either setting or rising. He then goes back down to his team and checks his watch to note when midnight occurs and Foreman's four weeks in charge are over. This episode takes place in the days directly following last week's episode, which was set during winter (complete with a heavy snowstorm). In winter the sun neither sets nor rises around midnight. [Given that hospitals are open on a 24 hour basis, House is likely calculating the end of the 4 weeks as being the start of the morning shift on the 29th day. He comes in at midnight, some time passes, sees the sun rise from the roof, then the 28th day ends. No problem. BTW, the sun never rises or sets near midnight in Princeton, New Jersey so proving that it was winter is overkill..] Corrected by Myridon