Zot!

Eclipse/Kitchen Sink. All written and drawn by Scott McCloud.

The original series was published by Eclipse Comics; after Eclipse went under, Kitchen Sink published the collections; before the fourth and final volume could be published, Kitchen Sink went under. My theory is nobody else has picked up the series for fear of going under.
The Original Zot! Book 1 (Eclipse; 1-4).
Zot! Book 1 (Kitchen Sink; 1-10). [This volume in color; subsequent volumes black & white, reflecting the original publication.] Old Book of the Week 8/10/05: OK, it's out of print, but they're still around if you look hard enough and it's worth the effort. Scott McCloud's debut tells the story of a Pollyanna-ish boy superhero, Zot, who lives in a science fiction Utopia and fights colorful but mostly harmless crime. Into this world comes Jen, a girl from the real world, and the two explore each other's worlds with surprising emotional depth. Before McCloud was a comic book philosopher, he was a first-rate cartoonist, and Zot remains both his masterpiece and his magnum opus.
Zot! 1987-1991: The Complete Black and White Stories (HarperCollins; 11-36). [From HarperCollins: Acclaimed comics artist and theoretician Scott McCloud will see his classic comics series, Zot!, republished by HarperCollins as an original trade paperback edition in July 2008. One of McCloud’s earliest extended works of fiction, Zot! is a seminal work that reflects the influence of both manga and the emerging alternative comics scene on McCloud’s comics. The book was also instrumental to the creation of Understanding Comics, his groundbreaking theoretical work on the comics medium.]
Zot! Book 2 (Kitchen Sink; 11-15, 17-18).
Zot! Book 3 (Kitchen Sink; 16, 21-27).
Zot! Book 4 (28-36). [I put this here not because it has been scheduled, but from pure fantasy. McCloud has said it will contain these issues; I don't know what will become of 19-20.]
Zot! Online: Hearts and Minds (online comic).