ASP.NET to Rails, MS to Open Source, Migration

I’m currently coming into Rails with a predominantly ASP.NET background.
We do a lot of .net and flash work (last launch was www.uso.org
http://www.uso.org/ ). I’ve done sites in PHP and JSP/Struts in the
past, but usually stick closer to the MS model. Anyway, I’m getting
into rails and it’s my first introduction to the Open Source community.
Seems most people are coming to Rails from PHP or Java without much
discussion about .NET.

Anyone else going through a similar migration?