What clever things have you done with an ASP.NET MVC Action method

Question

The ASP.NET MVC controller action methods are primarily used for handling \'business\' operations but it can be used for lots more.

I thought it would be fun to see

Answer 1

A partial implementation of less, a css syntax extender

It actually support only constants and what they called mixins, the source are here.

In this post I explained how to use it in mvc (the post is in italian but just look at the source):

you can just look here at the result