Another new year's gift - a dataset visualizer for VS2008. It never expires, too!
Important note:
An updated 0.9.14 version is available from this blog post:
http://blog.rthand.com/post/2009/06/23/Packing-assemblies-to-a-single-file-for-RighthandDatasetVisualizer.aspx
The improvements are that everything is packed into a single dll and you can visualize DataTable directly as well.