Ever since I found the Castle Project website, I have been enthralled by the code and concepts Hamilton *hammett* Verissimo advocates. I know that he isn't the first person to discuss these concepts, but he happens to be the person that made this click for me. He has several different projects going under the Castle banner from Inversion of Control containers to an MVC architecture called MonoRail that is loosely based on Ruby On Rails.
I have been toying with MonoRail after hours and it is pretty nice. I am really digging on hammet's IoC stuff though. Take a look at hammet's take on IoC here.