We've mentioned Simon Pegg's Eightball #23 t-shirt in the upcoming film Paul before; now it's shown up on the UK one-sheet for the film (thanks to Graham Sigurdson for the tip-off):
Enhance!
Before you ask: no, it's not commercially available. To answer your other question: Dan Clowes recently mentioned in public a desire to reprint the issue, but no actual plans have been made as of yet.