Right now I am in love with the work of Rosemary Travale, her stuff has a certain child-like charm that really appeals.  That and anybody that can use watercolors better than I can (see: Almost Everyone), is alright in my book.  Check out her Deviant Art, where she has been posting a Villain a Day for the month of October.  Some of her picks have been on the brilliant side, and I have been checking back often to see who else is on the list.  It is fun to see some of the people she cutesied up (See: Skeletor Below).