The top US presidents: First poll of UK experts. The full list plus ranks for Vision, Domestic Leadership, Foreign Policy Leadership, Moral Authority and Historical Legacy.
Data Archives from the American Presidency Project Fascinating statistical data about a variety of subjects, and not just trivia either. Includes data, for example, about Congressional concurrence with the President, number of Presidential vetos, number of first-year requests, etc. Good information for acquiring an overall understanding of our current political situation.