As others have mentioned, the description -- a bunch of kids gaining super powers -- doesn't begin to describe what the show is about. The characters are complex (even the minor ones), the situations are believable, and the stories go places you never expect. Actions all have consequences, but the show doesn't forget to have a sense of humor.
The key is that the super powers are all closely tied in with the characters' wishes, dreams, and personality; they stories are nothing like how this situation would be portrayed in the US. No one fights crime; they're too busy trying to deal with their own lives and the consequences of their personal strengths and failings. The first two seasons have been put online at Hulu.com; watch them and be amazed.
The key is that the super powers are all closely tied in with the characters' wishes, dreams, and personality; they stories are nothing like how this situation would be portrayed in the US. No one fights crime; they're too busy trying to deal with their own lives and the consequences of their personal strengths and failings. The first two seasons have been put online at Hulu.com; watch them and be amazed.