Visual Studio 2008与2005或C＃3.0与C＃2.0的新增内容是什么？

I was browsing the Hidden Features of C# 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)? questi