A model for Wikipedia version comparison?

I saw an interesting video the other day for the Mac file comparison tool Kaleidoscope, which has an elegant “diff” visualization tool to show changes between two files. The nice thing is the ability to select different modes of highlighting and seeing changes.

I can imagine that the basic file diff tool that Wikipedia has now could learn something from this to help folks sift through changes faster, especially with something as complex as WikiMarkup.

Take a look: