Percy Jackson & the Olympians/YMMV

The book series provides examples of:

 * Angst What Angst
 * Anticlimax Boss: Every big threat in The last Olympian. The Drakon dies in six pages, and Kronos barely fights enough to look strong. Even in the last fight it didn't take too long to bring him down. Even Typhon
 * Big Lipped Alligator Moment: The incident with the Sphinx in the Labyrinth was either this, or an Author Filibuster. Of course, it's entirely possible that it was included because Riordan got frustrated and needed to vent some steam about an event in his personal life.
 * Bro Yay: Travis and Connor Stoll (from the Hermes cabin). Percy and, too, but the Stolls are never without each other.
 * Complete Monster: Kronos the Big Bad of the series. His actions lead to the deaths of several characters, and he manipulates Luke and several other characters throughout the entire series. He is also completely devoid of altruistic qualities to the point where he savagely assaults his own son, Chiron.
 * King Minos from the fourth book. He started off
 * Crack Pairing: Tons. Rachel/Nico, Thalia/Nico, Percy/Clarisse, Rachel/Luke, Apollo/Hermes, etc.
 * Crazy Awesome: The Party Ponies.
 * Die for Our Ship: Rachel is frequently treated to this by Percy/Annabeth fans.
 * Draco in Leather Pants:
 * Mr. Fanservice
 * Ten, if you count the fact that in LO, there's the line "Six Aphrodite girls kissed me on the cheek in excitement."
 * Foe Yay: Luke and pretty much everyone. Particularly Percy, Thalia, Annabeth, and (if you squint) Grover.
 * Fridge Logic: Prometheus' claim that the battle is a reenactment of the Trojan War is true, in a way - but as the Achilles in His Tent situation with Clarisse indicates, he was wrong about which side was which.
 * Ho Yay: Percy and  share a bit of this in The Last Olympian. Luke and Percy do, too, particularly in the first book.
 * Genius Bonus: It might or might not be intentional, but the mention of a statue of Susan B. Anthony strangling Frederick Douglass in "The Last Olympian" might be a roundabout reference to how the two civil rights leaders, formerly steadfast allies, became divided over the issue of the Fourteenth Amendment allowing Black males to vote, but not women of any race (and to add insult to injury, it was the first Amendment that explicitly mentioned male and only male citizens).
 * Hilarious in Hindsight: "She made blue waffles and blue eggs for breakfast."
 * Les Yay: Silena and Clarisse, Annabeth and Thalia, Zoë and Bianca.
 * Zoë and Artemis, one-sided on Zoë's part, arguably.
 * Clarisse and Silena in particularly considering they play out the relationship between to its tragic conclusion. And we all know about them.
 * Magnificent Bastard: Kronos
 * Periphery Demographic: Because of Riordan's attention to detail, some people who're outside the target demographic of young adults find enjoyment in these works.
 * So much, that a college professor a troper knows that teaches Greco-Roman mythology actually listed this series as supplementary reading.
 * Tear Jerker:
 * The Untwist: Percy's origins. Anyone who knows anything about Greek myth could see the title of the series, the cover of the first book, and then put two and two together. It's really not that hard.
 * The fulfilling of the prophecy in The Titan's Curse It says "One will be lost" and everybody assumes it means someone will die
 * The Woobie: Everyone not named Ares, Kronos, or Dionysus. And Your Mileage May Vary on Dionysus.
 * Luke's, also deserves a special mention here.
 * In The Last Olympian, the narration actually says that Hermes "looked like he needed a hug." If that's not baiting woobiedom, nothing is.

Tropes which only apply to the film:

 * Ham and Cheese: While Uma Thurman and Steve Coogan are only briefly in the film, they do manage to make their respective scenes awesome.
 * Ms. Fanservice:
 * Medusa played by Uma Thurman. Because apparently, when Athena cursed her good looks, she didn't curse her badly enough?
 * Rosario Dawson as Persephone. "Never had a satyr..."
 * Unfortunate Implications: Grover. His characterization in the film was such a nonstop barrage of black stereotypes that it lead one person to liken it to a minstrel show.