>You can get fantasic results by converting all of your poly edges or nurbs
>isoparms to Paint Effects strokes. It takes a little longer to set up but
>allows you unlimited control of the look of your lines. You can even tweak
>individual lines if you want emphasis in particular areas. You can also use
>2D motion blur and depth of field. There's a script to help with this at...
>
>http://dirk-bialluch.mayaring.com

A fast and simple way to do this for nurbs is:
Paint Effects->getBrush (select desired brush)
select nurbs surface(s)
Paint Effects->autoPaint->Paint Grid

You could also play with the settings on paint grid to change
the line density, randomization etc.

If you are instead using polys, then use Dirk's script.

Duncan