The teen comedy includes various Easter eggs, nods, and references.
Here they all are, from the "Ferris Bueller's Day Off" homage to sneaky cameos.
The movie's stunt coordinator, Bobby C. King, has a cameo in the opening credits.
King can be seen near some skateboarders outside of the school building.
In the home release commentary for "Easy A," director Will Gluck said King was there for a practical reason — to oversee the extras who were skateboarding.
Emma Stone's character, Olive Penderghast, pays homage to "Ferris Bueller's Day Off" when she sings Natasha Bedingfield's "Pocketful of Sunshine."
Olive sings the track incessantly during an uneventful weekend at home, including while taking a shower.
Olive's hair in the scene is a nod to Matthew Broderick's opening monologue from "Ferris Bueller's Day Off," which takes place after the titular character has successfully fooled his parents into letting him take a sick day and skip school.
While showering and explaining to the audience that he's missing a test on European socialism, Ferris puts his hair into a mohawk style. He also takes the shower head and briefly sings Wayne Newton's "Danke Schoen."
There are plenty of oranges visible in scenes throughout the movie for no specific reason other than that Gluck wanted some kind of recurring motif.
The fruit can be seen on the Penderghast's kitchen table, in Mrs. Griffith's office, and in the school cafeteria, to name a few instances. There's also a more conspicuous example of Olive meeting a classmate at an orange grove.
"We tried to put in oranges in almost every single scene of the movie because I wanted it as a motif because I didn't go to film school, so I figured I had to do something cool looking," Gluck said in the film commentary.
Olive's parents are named Dill and Rosemary.
The Penderghast family must have an affinity for food because Olive's adoptive brother is also named Chip.
In earlier drafts of "Easy A," Olive actually had a brother named Kale and instead of Chip, she had an adoptive sister named Ginger.
Stone's real-life brother, Spencer Stone, has a cameo at Melody Bostic's house party.
Stone's brother and his best friend, Ethan, pop up as extras in the scene when Olive and Brandon leave the bedroom after pretending to have sex. Her sibling is the guy wearing a green shirt.
The name of the lingerie store where Olive buys her new clothes is a nod to the prop master of "Easy A."
The shop is called Guillaume's of Ojai and the prop master's name is Guillaume DeLouche.
Olive's last name is also an anagram.
When Olive debuts her new style and new attitude at school, she flirts with Anson.
"I just realized the funniest thing," she says. "My name is an anagram for 'I love.'"
But what she doesn't mention is that the letters of her last name can also be rearranged to spell out another phrase, "pretend shag," which is the film's major plot point.
Stone's long-time friend and actor Max Crumm has a minor role in "Easy A" as Pontius, one of the members of the school's Cross Your Heart Club.
In the movie's commentary, Stone said that she's known Crumm since she was 11 and he's probably her oldest friend.
The guys that Olive lists during the rumor mill montage are real people the director knows.
Olive agrees to do favors for guys at school by spreading falsities about herself, in exchange for things like gift cards.
"Phil Lord gave me 100 bucks from Best Buy so he could tell people we hooked up behind the library," she says.
"Chris Miller, big spender that he is, gave me $40 worth of movie passes for my pretend cowbell," Olive says.
In the commentary, Gluck said that all the names mentioned by Olive aren't random. They're actual people that Gluck knows.
Olive buys a ticket to see "Der Scharlachrote Buchstabe" at the Ojai Playhouse.
That film is actually the 1973 German adaptation of Nathaniel Hawthorne's "The Scarlet Letter."
Rhiannon's free-spirited parents are actually the two people behind Olive in line to buy movie tickets.
This time around, they're fully clothed and holding a bottle of wine and a baguette for their movie date.
Gluck's real-life dad, Peter L. Gluck, has a cameo as an employee at a local bookstore.
Olive goes to the shop in search of a copy of the bible, which the man hilariously says can be found in the best-sellers section, next to "Twilight."
Gluck's wife, Trista Gladden, and their two kids have cameos at the Ojai ice cream shop.
They show up near the end of the movie when Olive goes to the ice cream shop begging Evan to admit that he lied about going to second base with her.
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