Someone passed along a link to a site that has graphed the movie ratings from the IMDB by genre. Highest rated genres: Short, Film-Noir, Documentary, Animation. Lowest rated genres: Thriller, Action, Sci-Fi, and Horror. So what does this mean exactly? As the site summarizes, film festival type movies have higher ratings on average than movies which tend to focus on entertainment. Is it more difficult to make a quality entertaining movie than an intellectual movie? Perhaps laughter gets less universal appreciation than reason.