The only qualm is the scrolling - I would really prefer to have these visualizations being separate and scrolling behave normally. Sure, I understand it looks cool and fashionable, but (at least for me) its really distracting.

When it comes to the good stuff - I like the most the last feature, when one is a able to search for movies and look at characters (sometimes movie is "male" or "female" due to protagonist... or the mentor character, which very often have more lines).

For actor ages - a nice pick (I think it is highly related to the viewers' preferences - vide http://blog.okcupid.com/index.php/the-case-for-an-older-woma...).

The article says "number of lines", but wouldn't time or words be a better measure?