Converts standard image files (jpg, png, tif etc) into memory mappable files for use with Mental Ray. The .map files are Mental Ray's native format and work very efficiently in comparison to normal images when rendering.
Forester is a script that allows you to easily generate a large amount of object on a surface. It's very useful to create forests, rocks, garbages, etc...
A good script to make shading networks easily; of course, ramp-based networks which are so popular, specially for making glass, chrome, velvet and etc.
"Lighting Preset" allows you to create presets for your lighting ( All lights and rendering parameters ), save it to a .xml file, load and share easily from a UI in maya.