dotPeek is able to decompile .NET 1.0-4.0 assemblies to C#; provides syntax highlighting, code insight, complete keyboard support, Visual Studio look-and-feel, and brings the full power of ReSharper-style navigation to the entire .NET community.
Let us know how it feels. We're looking forward to your feedback in order to make the new decompiler bug-free and comfortable in daily use by all .NET developers.