!!FridgeHorror:
* AndIMustScream: If you accept (as Winston clearly does) that a ghost is the immortal soul of a dead human being, imagine what it must be like to spend a literal eternity ''trapped inside a concrete block.''
* The ''concept'', once you [[FridgeLogic stop and think it through]]. [[EldritchAbomination Eldritch Abominations]] -- ''plural'' -- exist and actively plot TheEndOfTheWorldAsWeKnowIt. The rank-and-file supernatural nasties, down the most benign, harmless minions of said Abominations, are still capable of causing untold destruction and chaos. Ordinary humans who are willing to do insanely [[MoralEventHorizon sick]] [[NietzscheWannabe twisted]] [[OmnicidalManiac shit]] in life can subsequently obtain ridiculous amounts of supernatural power once they die. Periodically, humanity has to face the threat of "Old Testament, real wrath-of-God-type stuff". And who's left to defend the planet from all this? A science nerd, an occult nerd, a uni bludger and a blue-collar guy who just needed a job with a steady paycheck, all armed with MadScience. In a nutshell, the world needs Superman and it's got the cast of ''[[SaturdayNightLive SNL]]''.
** Don't knock the 'cast of [=SNL=]', though; they've stepped up to the plate each time they've been needed so far.
** Also, Harold Ramis was a cast member and writer for ''SCTV'', which, while it aired on NBC in the 1980s alongside ''SNL'', is nothing like it. ''SCTV'' makes fun of Canada and its television shows. ''SNL'' makes fun of everything, from American and world politics to the little things in life.
* A video game example, but ''what, exactly, is the deal with the children's section in the library''?
* Interestingly the first movie actually has [[ExactlyWhatItSaysOnTheTin a horror in a fridge]].
* When Vankman goes on his date with Dana he has no reason to suspect that anything more will happen than a typical night out on the town. Why, then, does he later produce a syringe filled with ''Thorazine'' that he'd apparently been carrying on his person the whole time?

!!FridgeBrilliance:
* In a scene at the last level, Ray has these regarding Stay Puft. He figured that [[spoiler: the necromantic shockwave in the opening brought Stay Puft back to New York, but was still wondering why he didn't pick a new Destructor Form. Ray explains that Gozer, like the other ghosts, operates on a form of [[MagicAIsMagicA symmetry]] that has him locked into Stay Puft form. "One Destructor Form per god per dimension'' as Ray puts it, musing that he didn't choose such a bad form after all.]]
** Ray and Winston carry the Slime Blowers in ''II'' because they are the most positive Ghostbusters, as opposed to [[TheSpock Egon]], who is borderline emotionless (being seemingly immune to the same slime that made Ray and Winston want to kill each other), and Peter, who is...well, [[{{Jerkass}} Peter Venkman]].
** In the vein of FridgeLogic, Peter mentions "If we think of J. Edgar Hoover, J. Edgar Hoover will appear and destroy us..." Didn't he have to specifically think of J. Edgar Hoover in order to even say his name?
*** Not necessarily. He was naming a random celebrity, not thinking of anything in particular. If I asked you to think of a random person, you'd just spit out a name. Or it could be that you need to actively picture something, like Ray actively chose the Stay Puft man. Or Ray was already thinking about Stay Puft while everyone else was prattling on about Hoover.
**** Exactly. Merely throwing an example out there is very different from saying/thinking, [[ErnestScaredStupid "Yea, I call thee forth, (__________)!"]]
**** In the game, Egon notes in Tobin's Spirit Guide (Wii/PS2 version, I'm not sure Egon's notes appear in the other versions) that they were lucky that Ray picked Stay Puft. He muses on the fact, that if they had successfully thought of nothing Gozer could had picked someone else other than the Busters to choose... or it could have gone with [[NothingIsScarier Nothing]] as its Destructor Form. And how exactly do you fight [[TheNeverendingStory Nothing]]?
**** It's exactly right. Even though this is PlayedForLaughs in the film, Ray did a variation of TookAThirdOption and chose "something that could never possibly destroy us". A 500-foot-tall Marshmallow Man, while a major nuisance to the immediate area, would not bring about a cataclysm that the architect Ivo Shandor hoped for. All the Ghostbusters needed to figure out was how to defeat him, and close the portal, and they (barely) accomplished both at the same time.
* The first time you see the original film, you assume that a "torb" or "sloar" must both be unspeakably-dreadful monstrosities when the Keymaster mentions them. On later viewings, once you know that the destructive force manifested in this era as a 50-foot marshmallow man, you have to wonder if those previous manifestations were as something equally dumb...
** You get to find out what sloars are in the video game, though.
*** How it feels for a Shub or Zull to be roasted inside one remains a mystery.
* The real-life version of 55 Central Park West does not look like it did in the first movie because the Ghostbusters blew up the missing portion!
* He's not doing it out of scientific motives and clearly doesn't notice, believe or care, but Peter Venkman's experiment into "the effects of negative reinforcement on psychic ability" at the beginning of the first movie is proved perfectly; the more shocks he gets, the more psychic the kid he's electrocuting gets, while the more he butters up the hot co-ed, the less psychic she gets.
** Yes, but it's not negative reinforcement. The shocks are positive punishment, but because Venkman wants to see him squirm, he ruins the experiment with arbitrary shocking. The girl, thanks to Venkman's praise, is being positively reinforced ''against'' proper psychic deduction.
* The "Ghostbusters" theme by Ray Parker Jr. is the advertising jingle for the Ghostbusters as an organisation.
** Sooo... The first thing they did with the five grand they got for the hotel job was hire a big-name star to write an advertising jingle? Instead of, say... A)improving their equipment so it's less likely to hurt someone(such as themselves) B)Fixing up the firehouse so it wasn't a deathtrap C)Publishing their results so the rest of the academic community would take them seriously? They were pretty damned confident about future work.
*** Of course, good advertising would help ''get'' them future work and more business -- as a catchy EarWorm jingle is likely to help provide -- would help with all of those problems over time; A) and B) are gradually resolved as more income is coming in from more jobs, and C) as they gain more evidence from these jobs to help support their results rather than one isolated case study. Don't knock it; you can have the best and safest equipment and facilities in the world, but if no one knows your business exists it's not going to do you any more good.
*** Alternatively (and a bit more likely); the "Ghostbusters" theme song is a big-name star ''covering'' the jingle initially commissioned by the Ghostbusters for their business (as a cash-in at the height of the Ghostbusters celebrity and popularity).
* The pretty co-ed in the opening scene of the first movie was the control subject in Venkman's experiment. He planned all along to repeatedly shock one subject and let the other one skate by so as to compare the results. The fact that an attractive blonde walked in just made the choice of subjects easier.
* Why did Zuul never leave Dana's apartment? Because gate keepers are not supposed to leave their posts.
* Combination FridgeBrilliance and FridgeHorror for the second movie. Q: Why does Janine hook up with Louis? A: Because Egon is, ahem, paying too much attention to the slime and not enough to her...make of this what you will.
* From the second film, as Peter, Ray and Egon power up their proton packs, Peter intones "Do", Ray fittingly intones "Re", but Egon shouts his own name. But he has, in effect, said "Mi/Me!"
* Egon's warning against CrossingTheStreams makes sense when you think about what those devices are: focused proton emitters (like a laser, but with sub-atomic matter instead of light). Protons are positively charged. Particles with like charges repel each other. Two or more proton streams colliding is likely going to cause a massive repulsion effect, setting off nuclear chain reactions around the immediate vicinity (depending on the relative atomic stabilities of the surrounding objects). Not pretty.

!!FridgeLogic:
* The university drops their funding... but the very ''moment'' they caught the hotel ghost (the "Slimer" one), they had in their hands ''indisputable evidence of supernatural manifestation''. They should have gone back to university and gotten a big, fat grant and hired some ex-special forces to handle the actual Ghostbusting.
** So, if ''you'' had the chance to suit up, strap on a proton pack, drive around in a badass hearse, blow shit up, catch ghosts ''and get paid for it'', you'd get someone else to do it and sit behind a desk? 'Cause that would put you at odds with approximately every single person who's ever seen the films '''ever'''.
*** Why not do ''both''? Bust ghosts themselves, but as soon as one ghost is trapped, go back to the university, '''free the ghost''' to show it to everyone as indisputable proof, and finally '''win the Nobel prize''', as well as one million dollars from James Randi for proving that paranormal exists.
*** If you free a captured ghost, then you're simply allowing for more damage and arbitrary skepticism. Anyone who saw the original Star Wars trilogy would be familiar with the concept of holographic projections (assuming that it exists in the Ghostbusters universe). What you need, what you REALLY need to sell it for grant purposes is the testimonials of the people at the New York Public Library who interacted with THAT ghost.
*** It's plausible that, now that the trio was unemployed and middle-aged, they'd be more inclined for a "get-rich-quick scheme", which turned out to be their legitimate business within the film.
** Also, their "indisputable evidence" turns out to be pretty disputable, at least by the EPA. "I have in my hand evidence of the paranormal!" "Okay, let's see it." "Oh, it's in this box on the wall. See the green light? That means there's a ghost in there." "...''Really''. Can you let it out and let us actually ''see'' it?" "Of course not, that would be extremely dangerous." And so on.
** "Hey, we just got a call. Hop in."
*** Peck is an extreme FlatEarthAtheist who believes that specific, shared hallucinations of ghosts in particular can be chemically induced. He'd just say they'd drugged him somehow without his knowledge.
* Ghostbusters are supposed to be a privately operated company. Given that, how are they authorized to have blue police lights on their car?
** They wouldn't be the first people to purchase a used ambulance or cop car with some of the works intact. I don't know if that's illegal anywhere, but if it is then it must vary by region.
*** One of Dan Aykroyd's conceits was that the 'Busters operate somewhat outside the law--in fact, there's a deleted scene where the car ''burns up'' a parking ticket. Walter Peck is about the only remnant of this idea, but one can easily assume that the Ectomobile rapidly became an icon and nobody wanted to challenge an icon (in-universe, that is).
** Actually, in New York, cops use ''red'' lights; blue lights are used by volunteer firefighters and ambulance workers, and can be temporarily mounted on private cars with a permit. Although it's doubtful that the Ghostbusters would have qualified for such a permit...
** While they were successful and had recurring customers, it's arguable that the Ghostbusters performed a hybrid of pest control and emergency services, one or both would require a business license at minimum and a city permit depending on how they classified their business.
* Why doesn't a giant JEdgarHoover appear when Venkman mentions him?
** Because Ray had already thought of Stay Puft. They were screwed even before Venkman started his spiel.