A report on Slate.com shows economists (at the website Marginal Revolution) are using data from the crix aggregator rottentomatoes.com to chart the most dramatic career trajectories in Hollywood.

The sharpest fall -- M. Night Shyamalan, post-"Airbender." The sharpest rise -- Brad Pitt, who's developed a late-career knack for picking commercially successful or presigious pix, and this Friday can be seen in the Cannes winner 'Tree of Life," from Terrence Malick.