ComicPress is a WordPress theme specifically designed for webcomics. It just recently was updated and split into 2 branches: Classic and Blogging. Classic is designed to replicate the Megatokyo look, with a comic at the top of the page and a news post at the bottom and is very simple to set up and get started. The blogging version has quite a few new options and is a bit more complicated, has multiple posts per page and support for different types of image files. In either case I definitely suggest checking them out if you want to get a web comic up quickly, and a side note: Awsom Pixgallery supports both themes with special news post link support between the archive and the posts page