Calvin: Why would anyone want to save ME? All I do is prank my parents, prank other people's parents, and throw water balloons at anyone I see. I wouldn't be shocked if everyone was celebrating back at my house! * Homage: The very end is a recreation of the climax of The Sponge Bob Square Pants Movie.
Hostage for MacGuffin: The end of Chapter 9 - either Calvin gives over the Earth, or his friends and alter egos die.
Nublar: hi bob. we were just on our way to the weaponry mph, murp snirk skittle. Galaxoid: he means the cafeteria. he feels that getting enough to eat is like arming yourself with weapons! Isn't that hilarious?
The king peeked over Spiff's shoulder and SAW... whew. Ok, relax. You think he saw Spiff's laser, and all of their plans were ruined, right? Ha, ha. Nope. Do you know what the king saw? IT WAS CALVIN'S DUFFLE BAG!
"And," Chill went on. "You compete in races, and contests. There will be NO violence here at Camp Pine whoever is caught bullying another, will face the punishment!" Moe's mouth dropped open, and Calvin felt somewhat better. But then again, Moe always found a loophole.
Hobbes: Why wait till tonight? Calvin: Hobbes the good part of the movie happens then. Do you want to RUSH through the movie? Hobbes: No. Calvin: Good. Then we'll wait for tonight.
Then there's an absolutely fourth-wall shattering exchange in Chapter 8, where Calvin and Tracer's brawl interrupts the movie. It takes quite a while, and the news guy ends up undergoing some Sanity Slippage.
"But then who's the imposter?" asked Spiff. "I'll give you ten guesses." said the fake Chill. "Dumbo?" asked Calvin. "No." said the fake Chill. "Martha Stuart?" asked Hobbes. "No." said the fake Chill. "David Letterman?" asked Galixoid. "I'll give you a hint." said the fake Chill. "alien" "GARFIELD!" shouted Calvin. "JIM CARREY!" screamed Hobbes. "MARK TWAIN!" insisted Spiff. "LEMONY SNICKET!" screamed Stupendous man. "SHERLOCK HOLMES!" cried Tracer. "THE PRESIDENT OF RUSSIA!" yelled Galixoid. "THE GUY WHO INVENTED MARBLES!" Nebular yelled. "HANK THE COWDOG!" Calvin yelled. "THAT'S ENOUGH!" The fake Chill screeched.
Pass the Popcorn: Hobbes outright quotes the trope when watching Calvin and Tracer fight.
Calvin quotes it while watching the news guy go insane.
Calvin looked out over the beautiful snow capped mountains, and huge forests that surrounded it. The lake seemed like a sparkling wonderland and just increased the beauty of the wonderful scenery that Calvin and Hobbes now feasted their eyes.
Shout-Out: Aside from the above, the final chapter is titled "Home Again, Home Again, Jiggity Jog" - a slightly off version of a rhyme most well-known for its use in Blade Runner.
Spoiler Title: Chapter 9 is titled "HE'S AN ALIEN!", giving away John Chill's true identity (though it was revealed in the chapter before it).
Continuity Nod: Calvin makes note of a long-distance walkie talkie he had in his backpack "a couple of weeks ago" - echoing one of the original strips. (Though said strip took place in winter, and the fic is set in the following summer...)