After a fall down the stairs at school, Naomi loses her memory - not all of it, just the last four years. And in that refreshed state (where her last memory was of the age of 12), Naomi reexamines her life (boyfriend, hobbies, and family). The process surprises her and those around her and leads to changes that startle everyone - even the reader.
Zevin's Elsewhere was a refereshingly new type of novel. This one starts with a less-original premise (Regarding Henry, anyone?) but handles it in an amazingly fresh way. There's a bit of melodrama and the story may run a bit long, but Zevin is becoming one of the really great novelists of YA. Recommended.