The past two years have introduced a cottage industry to Washington, D.C.: polling that shows how very unlikable things -- root canals and Darth Vader, for example -- are more popular than politicians. You can also compare fictional characters' approval ratings to potential presidential candidates. If you want to do something truly novel, you could make up approval ratings for the founding fathers, and then compare them to made-up movie characters from the 19th century (which would probably have awful approval ratings because they'd be based on James Fenimore Cooper novels).