In the sequel, Hermes (Nathan Fillion) gives Percy powerful winds in a thermos from a Hercules-themed TV show that he describes as being "the best show ever...which means it's canceled". A good number of people may say the same regarding a show that Fillion became well known for. He also tells Percy and Annabeth, "It's cute how you finish each other's sentences."
"Yeah, we've all got Daddy issues," Luke says in the first film. Jake Abel played Adam Milligan, half-brother of Sam and Dean Winchester on Supernatural.
Dawson Casting: The titular character's sidekicks fall under this even after bumping their age up from the novels. In the book, Annabeth is 13, while in the movie she's 16, and actress Alexandria Daddario was 24 at the time of filming. Similarly, Brandon T. Jackson was 25 also playing a high schooler. This is even more jarring considering that in their most prominent roles coming into the film, they were already playing adults: Daddario in White Collar and Jackson in Tropic Thunder. This sequel was filmed three years later, with Logan Lerman now in his early 20s as well. Justified in Grover's case, as he is said to look older than the others (he has a goatee in the first book already) and is in fact 24, although since satyrs age half as fast as humans, he is the equivalent of a human 12-year-old.
Disowned Adaptation: Rick Riordan does not like the movie adaptations of his books. Upon being told on Twitter that a teacher was planning to show the Percy Jackson movies to her class, Rick Riordan posted a form letter on his blog that students could give their teachers, telling them the movies were awful and a waste of good classroom time.