I don't think you have asked yet, as such. Known things he worked on are all in this post
, right? I could probably make a nice table out of that and add it as a section at the Steve Purcell page.
It looks like all the milehighcomics.com image links are broken now, but I'd only want a handful of images at most anyway. If you can find just one or two of them back I'll add a mini-gallery with that, one of the RuneQuest covers, the Nocturnals back and Paper Museum. That should cover a nice range.