So far the only reading programs I've used for eBook files have been Calibre's eBook Viewer, Adobe Digital Editions, Mobipocket, and
yBook. As best as I can tell (or recall, in the case of one's I havn't used in a while like Mobi and yBook), few of them take over the file association for various eBook files, let alone give them a cool icon.
So the other day I stumbled across Dezinerfolio's free vector icon set called Stationery. It contains some book images that I think look great. I used
ConvertIco.com to make a couple of my favorites into ICO files to use for ePubs on XP, but people with better OS's can probably use them straight.
Download Stationery: Free Vector Icon Set
