Sitecore MVC Approaches

Here's a great blog I came across that outlines some of the different types of renderings you can use in Sitecore MVC, and how to use the.

http://www.matthewdresser.com/sitecore/carousel-sitecore-mvc-(part-2-controller-renderings)

I think most people coming from a .NET MVC background would probably prefer the Controller Rendering option, which is explained in the link above.