- "Faeries. Why did it have to be faeries?"
- Harry later remarks that the Church probably stores captured Blackened Denarii in a big warehouse with a gazillion identical boxes.
- Thomas's remark, on the subject of Denarians, is a direct quote from Angel: "I already have one demon inside of me. What's one more?" Harry quickly corrects him.
- The Gruffs inspired the story "The Three Billy Goats Gruff" in-universe.
- One of them one-ups the Big Bad Wolf by smashing through a brick wall.
- Harry calls Thomas's huge, pseudo-military Hummer "Das Truck", in a possible oblique reference to Das Boot.
- Riding home in the back of Michael's truck, soaked and freezing, while watching the passengers in the cab getting warmed by the heater, Harry starts feeling like a Charles Dickens character.
- Re-read the scene in which Harry and Nicodemus are in the boat, then compare it with the final fight between Malcolm and the Operative in Serenity.
- Harry calls Kincaid "Wild Bill" when the mercenary nearly gets provoked to violence by Nicodemus.
- Murphy threatens Harry in the style of The Honeymooners after he cracks one too many short jokes.
Murphy: Pow, Dresden. Right to the moon.
- Toot-toot does a full-blown parody of Full Metal Jacket: "This is my box-knife. There are many who like it, but this one is mine."
- The original quote comes from the Rifleman's Creed, which apparently was/is a genuine part of US Marine doctrine. Toot-toot is probably more likely to have seen the movie though, particularly since Harry attributes it to the movie when he hears Toot-toot say it.
- Toot-toot's "uniform" includes boots filched from a Ken doll or a vintage G.I. Joe.
- In the same scene, Harry hums "When You Wish Upon a Star" while waiting for Toot's return.
- A serious gut wound is sealed up with superglue, with the victim mentioning that they saw it in a werewolf movie.
- Hiding from the Gruffs, Harry recalls a scene from one of the Scream movies.
- He also thinks of the Gruffs as Inky, Binky, and Pinky, three of the ghosts from Pac-Man. (Although it's actually Blinky, not Binky.)
- Talking about how The Masquerade holds up even in cities, Harry quotes William Randolph Hearst.
- Uriel leaves Harry a copy of The Two Towers, with a significant phrase underlined.
Harry: "The burned hand teaches best." What the hell is that supposed to mean?
- Thomas refers to the White Council's attitude towards him as 'Leper, outcast, unclean', a reference to The Chronicles of Thomas Covenant.
- Harry explains that Denarians' Fallen partners are schemers that would make Cardinal Richelieu look like Mother Teresa.
- Mab's snow-sculpture re-creation of the safe house's destruction depicts humans as the size of Star Wars action figures.
- When Nicodemus finds his operations compromised by his habit of cutting out the tongues of his followers, Harry sighs that he didn't read the Evil Overlord List after all.
- Harry quotes The Princess Bride: "You rush a miracle-worker, you get rotten miracles."
- This, after paraphrasing Helen Reddy's "I Am Woman" when he gets the idea for the miracle in question.
- Faced with opponents whom Michael and Mouse can sense but he can't, Harry complains about not getting to be the Jedi.
- He quotes Star Wars a few paragraphs later, and calls Mouse "Chewie".
- Thinking about the gruffs' possible maneuvers, Harry guesses that one might jump clear over him Kung Fu Theater style.
- Charity is like the MacGyver of the kitchen.
- After a reference to the Predatornote movies goes unrecognized by a centuries-old demon:
Harry: That's the problem with you nearly immortal types. You couldn't spot a pop culture reference if it skittered up and implanted an embryo down your esophagus.
- Somehow, a collection of Calvin and Hobbes comic strips got stashed with Harry's books on Nevernever creatures.
- Faced with the largest of the gruffs, Harry gloomily compares his circumstances to a Tom and Jerry cartoon... except Jerry is not going to win.
- The dolphins at the Shedd Oceanarium are Pacific white-sided dolphins, not bottlenosed—or, as Harry puts it, not "the attractive Flipper kind."
- Bob's been talking like a pirate ever since Harry took him to see a certain movie.
- Fleeing the island in a leaking boat, Harry starts singing "Blow the Man Down" on Bob's behalf.
- Thomas, armed with sword and pistol, hums "Froggy Went A-Courting". Discussing the Denarians' abilities, he points out that the one he fought wasn't Superman.
- Sanya quotes from the 1981 film Excalibur, and Harry remarks that Merlin and Captain Picard were the only good things about it besides that line.
Sanya: The king and his land are one.
- Hail to the King, baby.
- The clay model Harry gives Thomas to disguise him looks a bit like Gumby.
- When Murphy objects to a plan on the grounds that it steps too far outside the law, Harry asks her to impersonate Sylvester Stallone's Judge Dredd role.
Harry: Do me a favor. Hold your nose shut, put on a Philadephia accent, and say "I am the law."
- Michael says that Shiro knew swordplay like Wolfgang Amadeus Mozart knew music.
- Harry gets annoyed that Michael isn't able to step in and solve the crisis in one go, like Superman would.
- Later, Harry tells Michael that because of his Walking Techbane effect, he doesn't ride planes. Michael responds that "statistically speaking, flying is still the safest way to travel."
- Gard misses both Harry's MC Hammer reference and his Yertle the Turtle joke.
- The super-elaborate circle used by the Denarians to hold Ivy captive is similar to the Magitek pentacles used by Carnacki the Ghost-Finder, which also incorporated colored light, sound, and the like.
- Harry remarks that Butters, if called in to tend the injured Kincaid, will do a McCoy impression:
Harry: "Dammit, Murphy. I'm a medical examiner, not a pasta chef."
- Once again, the Archive is compared to Bill Mumy's character Anthony from The Twilight Zone's adaptation of "It's a Good Life!".
- Subverted when Harry wants to quote The Bible to scold Molly, but admits he can't remember the exact words.
- He does recognize where Nicodemus's surname of "Archleone" came from, however.
- Later, he compares what he and the Knights are doing to the biblical Daniel entering the lion's den.
- Harry points out that in mid-fall, a Denarian is no more immune to gravity than anyone else in the hands of Mother Earth and Isaac Newton.
- As the trouble piles on, Harry is tempted to just stay in bed and Rip Van Winkle his way past the crisis.
- Faced with the obviously contrived tableau of Nicodemus posed with his followers, Harry undercuts their pretensions by asking if they're auditioning for Family Feud.
- Gard has excellent timing when it comes to blaring "Ride of the Valkyries" as she arrives.
- Discussing soulfire with Bob, Harry paraphrases Swamp Thing.
- Yet again, the Water Beetle is compared to Quint's boat from Jaws.
- The Senior Council, according to Harry, couldn't find its heart with a copy of Gray's Anatomy (no, not that one), X-ray vision, and a stethoscope.
- Murphy quotes the same Yeats poem which Harry'd quoted back at the end of Storm Front.
- Bandaged up after the battle at Shedd Aquarium, Kincaid looks like The Mummy's stunt double.
- The projected soulfire-hand Harry uses to beat the crap out of Thorned Namshiel is strongly reminiscent of the Bigby's Hand spells from early editions of Dungeons & Dragons.
- After Michael reveals that it is not Kincaid's time yet, Harry 'Spocks' an eyebrow and gives him a look.
Shout Out / Small Favor
Book #10 of The Dresden Files sees the return of the Denarians, conflict with both Faerie Courts, and a hidden plot for much higher stakes than Harry'd ever suspected. Can Chicago's top wizard wisecrack his way out of this one?