At the moment there's only two PSP comics worth note. And before anybody here get's uncomfortable because they don't know what a PSP comic is or don't have a PSP, don't worry- both of these can be read (easily) from your computer.
The series has reached #5. Only one more issue to go.
This work has been monumental in terms of showing what comics on the PSP can be. Great sory and art.
Matt Kindt's indie comic SuperSpy has reached #7 as it's gone ongoing.
Meanwhile, I need to get off my ass, stop spending so much of my free time at the bar and start working on my own comic. Ground floor opportunity here.