On a lark, the host of a late-night political talk show (Williams) decides to run for president. The thing is, he never expected to win.
http://www.imdb.com/title/tt0483726/
Very humorous and honestly williams does make a few points in the movie while running through debates, that and with Lewis Black and Christopher Walken on his side, the movies great. The end is a bit slow paced but the first hour or so I couldn't stop laughing. I'd recommend it to all.