There is a good deal of Ruby envy among the more outspoken .NET developers. This post is an attempt to aggregate the many blog posts from .NET developers expressing their love of ruby.
Rob Conery
Why I Like Ruby
Why I Like Ruby, Part 2: Blocks
Contrasting Ruby and C# Using My College Friends
Scott Bellware
Ruby For .NET Developers
Justin Etheredge
What is so great about Ruby?
Jeremy Miller
Silly thing I want from Ruby in C#
David Tchepak
Essence and ceremony, Ruby and C#
John V. Petersen
Why I Love Ruby
Davy Brion
Why you don’t need dependency injection in ruby
I don’t know how this blog is going to evolve
I know there have been a lot more of these but this is what I could find quickly. If you have a good link that belongs on this list leave it in the comments.