What’s Your Favorite Presidential Movie?

Since it's President's Day, tell me what your favorite 'Presidential' movie is.

As you may know, I don't watch many movies, but I have seen "In the Line of Fire" with Clint Eastwood and loved that movie.  I also loved Michael Douglas and Annette Benning in 'The American President.'   But, I'm sure there are many more...so have at it!