These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: American Gods
Big Lipped Alligator Moment: The cutaway chapters. Did we really need to know about the Man-eating hooker goddess and the Ifrit and the taxi driver? Don't forget Laura applying for a Job literally Just for Pun.
Fridge Brilliance: When you realize that the word "Wednesday" is derived from "Odin's Day", and learn that Mr. Wednesday is Odin.
Genius Bonus: Anyone who knows the origins of the names of the days of the week (etc. "Friday is Freyja's day") can figure out Mr. Wednesday's real identity pretty quickly.
Not only that, but in general the more mythology you know the more you will get. In a book that explicitly contains Norse gods it would be unusual for there to be two redheads with scarred lips, eh?
Hinzelmann is based on the legend of a kobold named Heinzelmann, who's true form was of a small child with two swords impaled in his body. Also, it was said that if he was ever chased out of his house, evil luck would follow. In the end, it's implied without Hinzelmann alive the town of Lakeside will no longer be the idyllic, slice-of-heaven town it is now.
Narm: In the 10th-anniversary edition audiobook version of American Gods, Mad Sweeney'sFinal Speech is ruined for Jewish viewers because the way he pronounces "boobies" is identical to the Yiddish bubby, or grandmother. What kind of fortune letter would let an old drunken leprechaun play with her grandmothers? Perhaps he just really wanted some Christmas Cake...
Nightmare Fuel: Hinzelmann. The story of the tribe that creates its own god from a murdered child, who in turn, a few thousand years later, settles down in Lakeside and kills another child each year.
Squick: Many examples: a man eaten by a vagina, the man-eating goddess being ground into a bloody smear by a limousine, almost any scene in the last half of the book involving Laura...
Media taking over Lucille Ball's image on an episode of I Love Lucy and offering to show Shadow Lucy's breasts. Thankfully, Shadow turns the television off before she can do it.
The Woobie: Poor Shadow doesn't catch a break throughout.