CoolInfographics brings us this great chart of RottenTomatoes scores of several movies and their sequels, trying to determine which movies have Great sequels vs garbage sequels.  I also agree with this comment on the design:

I especially like turning the chart 45°, which puts the best score possible for a sequel to improve on the original at the top center of the chart.  If both the original and the sequel scored high, the bubbles are located towards the right instead of the top.  I’ve done this with a number of 2×2 quadrant charts for clients.

via Cool Infographics – Blog – The Sequel Map – Is Part II Ever Better than the Original?.