Butch Curry is an industry pro who owns and produces everything at Zombie Nirvana Games. He has a nice gallery of maps here:

Butch is also beginning a wonderful project to instruct others in fantasy cartography (using Photoshop), including both a book and podcast video tutorials (see a good sampling of the latter, on making parchment, here: http://www.zombienirvana.com/podcast...FCAP-beta.html)