Heh, got a potential cel gig? Well, if you have After Effects or a similar app (shake, Combustion etc) you can get a pretty good cell look without any shaders at all. Here's an online tutorial that covers the basics-
http://members.aol.com/forrestbro/how_cartoon.htmlhttp://members.aol.com/forrestbro/how\_cartoon.html
You can get a varied line-width in post too, take the edge layer, duplicate it, add noise, hit it with a touch of blur and then clamp it using a levels filter. Also the tutorial discusses a more "modern" toon shaded look, but you can get closer to a classic look by reducing or eliminating shadows and getting rid of any specular highlights in your render.
I hope this got to you in time, and if it's for a bid good luck!