A book I tend to see quite frequently in school and public libraries in the YA section is Astro City, Volume 1 -- Life in the Big City. It's a superhero tale, and though I've only read the first issue, it seems to be quite a unique take on the genre. From what I've read so far, co-creators Kurt Busiek, Brent Anderson, and Alex Ross do a good job of deconstructing the superhero archetype without turning him/her into an ultra-violent nihilist.
The guys at iFanboy do a much better job of singing the book's praises below. Take a look!