Frek and the Elixir

This book has more novel ideas and settings from one paragraph to the next then most sf&f authors manage to squeeze out in the course of an entire tome. This book is some combination of a drug induced hallucinatory vision with Alice in Wonderland, yet manages to pull off a clear hero journey's plot. In contrast to the formulas and tropes of most books I read, this 2-decade old book is fresh, original, and compellingly crazy.