> I think it would be interesting to compare the results with a similar eye track of a program written with more emphasis on data flow

It would also be interesting to compare with code with decent syntax highlighting. For some reason I don't quite understand, most syntax highlighting out there highlights the wrong thing: keywords. It needs to highlight the site-of-definition of functions, variables, etc. For example: http://david.rothlis.net/code_presentation/distracting_synta...