Common Sense Note
Parents need to know that while most of the movie is good Scooby-Doo-style fun, it also has an undercurrent of intolerance. In addition to Dracula and the Wolfman, the movie sets up the boogeymen of the day: gay men, fat people, and girls who want to be included in a boys club. There's also lots of cartoonish violence that, while completely unrealistic, is likely to scare younger kids. Sean's parents are also going to a marriage counselor and fight loudly where Sean can hear them. And while Rudy protects Horace from getting bullied, he's also not someone to look up to -- he drinks and smokes. The kids also swear quite a bit and call their teacher and other kids "faggot."
Sexual
Content
Rudy uses binoculars to stair at a girl through her window. She's shown in various states of undress. It's implied that Frankenstein accidentally snaps a picture of her naked. Lots of talk about whether a girl is a virgin.
Violence
Considerable cartoonish violence: vampires are staked in the heart, a mummy comes unraveled, the Wolfman is blown apart repeatedly and puts himself together again, kids get beat up and threatened by bullies and monsters, Gill Man crushes a man's head, people and monsters are shot at, a hearse driver and police officer are killed.
Language
Some swearing, mostly by kids, including "asshole," "son of a bitch," "holy s--t," "hell," "godamn," "tits," "chicken-s--t," and "bitch" (said to a little girl).
Social
Behavior
Boys call one another "faggot" as a menacing insult. Sean says a teacher was "fully homo-ing out." Horace is bullied for being fat, and several kids call him Fat Kid. Sean tells Phoebe, when she insists on membership in the all-boy monster squad, that she's creating "reverse discrimination."
Consumerism
Kids drink Pepsi, talk about Twinkies and Burger King, and visit Fox photos.
Drugs / Tobacco /
Alcohol
Rudy, who is in middle school, is the cool kid who also smokes cigarettes. Sean's dad smokes. Rudy drinks a beer.