Mike,
If you're interested in abtsracts, I can recommend the work of Regina Valluzzi (who provided the cover art for my book at a very reasonable price), at
http://nerdlypainter.com/, and also the work of a friend, at
http://www.leepina.com/ (though I'm not at all sure she has any experience in this sort of project). You can browse through many different pieces on both sites.
Great title!
jlk