Superbad is the standard high school senior dudes try to get some trim from their unrequited crushes before school ends story, made much better by a lack of gross-out jokes and a great deal of heart.
The story is as much about friendship and camaraderie as it is about buying booze to impress (and hopefully bone) chicks. The two main characters, childhood friends Evan (Michael Cera) and Seth (Jonah Hill), are going off to different colleges in the fall, and there is a lot of unspoken heterosexual-life-partner angst about that inevitable parting threaded through the story. The movies really nails the authenticity of that friendship, and I found myself thinking throughout the movie, "That's exactly how my friends and I were back then."
The movie takes a (somewhat unnecessary) zany turn when the two local bonehead cops (Seth Rogen and Bill Hader) show up and take third friend Fogel (a.k.a. the already infamous McLovin) (Christopher Mintz-Plasse) on an all-night ride-along. It's extremely hilarious, but feels like it belongs in a different movie than Seth and Evan's
All in all, though, I McLoved it and recommend it McHighly.