Much like a scandalous private photo of a semi-famous teenage girl (what? just an example), High School Musical mysteriously showed up in the RiffTrax mailbox one day. And now we thank Efron, the ancient god of non-threatening gender ambiguity, that it did. We’d been searching for a movie that would finally address the issue of cliques in high school, something you never see in a high school film (unless you’ve seen any high school film).