Fun movie gadget from Slate

I signed on to Rotten Tomatoes years ago, mainly to keep an eye on the reviews of the online games my kids were playing and occasionally to look at movie reviews. I haven't looked at the site in a long time and the site has changed  a lot. And they have a lot more data about movies and movie reviews.

Now Slate has provided a nifty gadget that takes all that data and lets you compare careers of actors and directors -- who's up, who's down. Scroll down past the analysis of M. Night Shyamalan and the analysis of career trajectories, and you can plug in names yourself. It's fun. And I figure if I play with it enough I'll think of a way it's useful, too.