First of all, I don't even know if Maya already has this feature built in or not, but I wrote it anyways, just for fun I guess.
This is a simple script that does one thing: evaluate faces on a poly mesh.
e.g. If you have a poly mesh and you want to find out the faces that are not a quad-face. You simply input 4 in the input field (4 is default), and click "Evaluate". It will list every face that is NOT a quad on the selected mesh.
Note: I have only made the script work with one selected object at a time for simplicity sake. So its probably not very user friendly if you want to test, say a large scaled environment with hundreds of object in the scene. This is probably best used when you want to test your character or something. I might add multi-select feature in a later version.