I'm Not Her
by Janet Gurtler

A touching and well-constructed look at how one sibling's illness affects the life of the other.

The Tomorrow series
by John Marsden

A gripping, dark story of teenagers caught in World War III.

Angus, Thongs and Full-Frontal Snogging
by Louise Rennison

This whole series about outspoken teenager Georgia Nicolson makes me laugh out loud.