Perhaps you can't judge a book by its cover, but Dan Wilbur of Better Book Titles can. Here's how he decided to "improve" the covers of some very well known books:
This page is for people who have trouble slogging through the information on book jackets or feel intimidated by the title and cover itself. How many times have you perused the cover of a novel only to rub your sore eyes and realize you've learned NOTHING from the book's title?!
This blog is for people who do not have thousands of hours to read book reviews or blurbs or first sentences. I will cut through all the cryptic crap, and give you the meat of the story in one condensed image. Now you can read the greatest literary works of all time in merely seconds!
Link - via metafilter