Which of the following two charts (both created with R) to you prefer? This dotchart:
Or this bar chart?
Andrew Gelman (who, incidentally, is speaking at the October NYC UseR meeting) prefers the dotchartprefers a line plot (update: see Gelman's comment, below), but personally I think the bar chart is more easily interpreted. What do you think? You can join the discussion at Decision Science News at the link below.
Update Sep 8: Prof. Gelman responds, with a detailed record leading to the correction above.