<p>I was browsing the <a href="https://stackoverflow.com/questions/9033/hidden-features-of-c">Hidden Features of C#</a> question and thought I would try out one of the features I was unfamiliar with.  Unfortunately I use Visual Studio 2005 and the feature in question was introduced later.   Is there a good list for new features in C# 3.0 (Visual Studio 2008) vs. C# 2.0 (Visual Studio 2005)?  </p>

Here's a link to the MS page on .NET 3.0:
http://msdn.microsoft.com/en-us/library/bb822048.aspx
...and on VS 2008 for C#:
http://msdn.microsoft.com/en-us/library/bb383815.aspx
I haven't tried VS2008 and .NET 3.0 out, but I figure the links might help ;)