High quality tennis ball with great looking fur.
Three versions using Maya fur are included in the downloadable Maya package:
-Renderman for Maya (shown in preview image)
-Maya software renderer
The core bitmap textures could be used to control fur in most high-end 3D packages.
The Renderman for Maya version is shown rendered in the preview image above, but the Mental Ray version is very similar. Naturally, the Maya software version is not so great looking!