.NET vs. J2EE
A lot of times, I've seen people get into a debate over .NET and J2EE application development. I'm not a Java developer and so cannot vouch for the same, but today, when I was looking through the MSDN RSS feeds, I saw this site and it contains a whole host of white-papers, benchmark information and sample applications about the differences between .NET and J2EE application development. You can find more information at:
Competitive Reports and Evidence: Comparing .NET to J2EE.