What you're looking for is something along the lines of "painterly rendering" or "cel shading," probably. Both of these are subsets of the space of non-photorealistic rendering techniques. The majority of the information on these rendering techniques can be found in academic papers or books. There doesn't appear to be a wealth of Max plugins that provide NPR effects:
You can find more information by searching for "nonphotorealistic rendering," "painterly rendering," and "cel shading," although you're more likely to find academic papers discussing the techniques. There are a few threads on various CG forums talking about ways to use Max to do NPR, and Autodesk appears to have a few classes on the subject (behind paywalls, so you'll have to browse their site directly). There's also this YouTube video of a SIGGRAPH class from 2009 on the subject.