Zim studies the strange human ritual known as "sleep", with rather bizarre results. Alternate story title: Zimmy Nightmare Movies in FULL SOUND AND COLOR!!!
This hilariously spastic TV show, cancelled well before its time, has inspired in my mind both an epic multi-fanfic-spanning storyline and a freakish little nightmare. The latter is available for your perusal here.
Invader Zim and the characters therein belong to Jhonen Vasquez (or should). No copyright or trademark infringement is intended and no money will be made from these stories.