* AcceptableTargets: Like all good English TV, [[CheeseEatingSurrenderMonkeys France]], [[SelfDeprecation England]] and [[{{Eagleland}} America]], (and occasionally [[{{Oireland}} Ireland]], UsefulNotes/{{Scotland}}, and UsefulNotes/{{Wales}}) are constantly the butt of jokes.
** Although in the episode about France it was pointed out that the French have a very solid military record, refuting the CheeseEatingSurrenderMonkeys stereotype, and an episode on "Germany" instituted a special "[[Series/FawltyTowers Don't Mention the War]]" penalty (only for Stephen to go on to break it himself with a question about WWII).
** Rob Brydon often takes umbrage at what he (jokingly) calls Stephen's offensive stereotypes with regard to the Welsh.
** Stephen once made the mistake of mentioning his prep-school tailor, [[http://www.youtube.com/watch?v=lpvOBxZdOYg with obvious results]]
** Colin Lane's appearance in Series L had Stephen making several comments about Australians, which Colin took (joking) offense to. Naturally, his reaction ensured a lot more jokes at Australia's expense for the remainder of the show.
* TheAce: Sandi Toksvig, who wins virtually every time she's on the show and still manages to be very interesting and humorous.
* TheArtifact: Almost no one ever uses the buzzers anymore, even during the General Ignorance round. Jo Brand might be the only exception.
** The panelists appear to be using the buzzers more now in Series L.
* AuthorsSavingThrow: Rob's awful, awful pun "philately will get me nowhere" in Holidays. Cue audience groans and an utterly unimpressed Stephen. Luckily, he redeemed himself by [[ItMakesSenseInContext going back in time and correcting himself]].
* BigLippedAlligatorMoment:
** Alan being presented with a potato-head version of himself in "Corby".
** At the end of "Justice", after a discussion about nude psychotherapy, all five panelists get out of their seats and get their lads out. Color bars appear and a continuity announcer says something's gone wrong. The show returns to the QI panelists back in their seats, joking about their relative sizes. Unlike other non-sequitur moments intended to segue into the next topic, the only thing left is the reading out of the scores (at least in the [[JustForPun regular length]] version of the show).
* CrossesTheLineTwice: Stephen [[http://www.youtube.com/watch?v=CUn7zy8Ya20&t=1m34s tells a joke]] that utilises this in the punchline, and then asks [[LampshadeHanging "Why is it so funny?!]]
* DudeNotFunny: Fry had to cancel a Japanese segment of a documentary about language and culture after poking fun at the bizarre luck of Tsutomu Yamaguchi, who survived ''both'' atomic bombs at the end of WW2.
* EarWorm:
** [[http://www.youtube.com/watch?v=i1QofOJ9AjM Peter Cushing lives in Whitstable, I have seen him on his bicycle]]...
** They say of the Acropolis...
** The show's theme tune is pretty awesome.
* EditedForSyndication: The BBC America episodes are 40 minutes long (regular episode + commercials) and shown three at a time.
** NoExportForYou: Retroactively: After BBC America got the rights almost all the episodes on YouTube have been taken down.
** [[FridayNightDeathSlot Sunday Morning Death Slot]]: Possibly, though this may not be as much of a problem since people who get BBC America would also likely own [=DVRs=]: switched from 4:30 PM Thursdays to 9:30 AM Sundays, which makes the opening "Goooooooodeveninggoodeveninggoodevening!" a little awkward.
*** They also air only once, whereas in the 4:30 slot they were repeated a few times.
* EnsembleDarkHorse: Johnny Vegas. Considered TheScrappy by some fans.
* FreudWasRight:
** In one episode, the audience laughed uncontrollably as the formula for paper folding comes up.
--->'''Stephen''': What you need is length and thickness [[spoiler:(to determine how many times you can fold a piece of paper)]].
*** This may qualify as a [=CMOF=], as quite a few innuendos had been delivered by that point and Rob Brydon simply gave Stephen an innocent "Oh, really?" look...
** Not to mention Doon Makichan absentmindedly miming eating a large deep-fried Curly Wurly. ''Two-handed''. [[http://youtu.be/GXeDuoKQtxQ?t=6m50s Linkski.]]
* HarsherInHindsight: There are many instances during the "J" series where Stephen Fry is obviously sick, on medication or otherwise not himself (the whole Jumpers episode being the most obvious example). Later that year, he attempted suicide (again), and in an interview afterwards talking about his bipolar disorder, he said, "There are times when I'm doing ''QI'' and I'm going, 'ha ha, yeah, yeah' and inside I'm going, 'I want to f****** die. I want to f****** die.'"
* HilariousInHindsight:
** During the "Green" episode, Danny Baker urged the viewers at home to save electricity by turning off their television sets. That episode had one of the lowest audience figures of the programme's run.
** When David Tennant was on the show jokes were made about Bill Bailey being on the Christmas special of ''Series/DoctorWho''. Come the 2011 Christmas special...
** In early series, Alan Davies makes several jokes about being an oppressed and displaced Welsh person. And then, in the Europe episode, he reveals that he's found out that, despite his last name indicating otherwise, he actually has no Welsh ancestry.
** In Series I aired in 2011, when discussing the fungus Cordyceps, Johnny Vegas speculates what kind of disaster it would be if it jumped into humans. Cue ''VideoGame/TheLastOfUs'', a game featuring that exact premise just two years later.
** In the Series F episode Future, Ben Miller's buzzer is the ''Series/DoctorWho'' theme. Come 2014, and Ben Miller is playing the villain in the third episode of Series 8!
* MostAnnoyingSound: Sean Lock's crying baby buzzer in "Imbroglio". Sure, it was invoked (all the buzzers were purposefully annoying), but while the first two buzzers were annoying [[StylisticSuck in an amusing way]], Sean's crossed the line into this territory. Judging by the reactions of Sean (he doesn't often lose his smile, [[OOCIsSeriousBusiness but he did for this!]]), Stephen, ''and'' the audience, they all seem to agree.
* NightmareFuel: The occasional segment, but the "Inventive" episode was pretty horrifying for anyone with a fear of ventriloquists' dummies.
* [[TheProducerThinksOfEverything The Producers Think Of Everything]]: Some of the panelists' jokey answers set off the klaxon, especially [[BottomOfTheBarrelJoke too-obvious jokes]].
-->'''Stephen:''' Name a poisonous snake.
-->'''Jimmy Carr:''' Piers Morgan?
* TheScrappy:
** Johnny Vegas. Considered TheWoobie by some fans, although for others ''QI'' [[RescuedFromTheScrappyHeap actually made them warm to Johnny Vegas]], because he displayed an actual wit and warmth which is pretty noticeably absent from a lot of his stand-up and other stuff. Also, when [[CreatorCameo John Lloyd]] came on [[StopHavingFunGuys and started arguing quite seriously with Stephen about the definition of sound]], Johnny came out with an ArmorPiercingQuestion that shredded his argument.
*** Or when Johnny's wit was the only thing that rescued the "Fight or Flight" show from Pam Ayres.
** Ronni Ancona doesn't seem to be very popular, either. [[TheSmurfettePrinciple And now that the BBC are requiring one female on every panel show...]]
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