Nominations for the best CLR content on the web...

One of the PMs on the CLR team is gathering a list of the best CLR content on the web. The idea is to pool it altogether in a single spot to make it easier for folks to find the best stuff. Things such as blogs, tools, samples, books, etc. Basically anything you can get a URL for ;-)

Do you have suggestions on what should be included? Just leave me a comment here with the link and tell me why you like it. Please feel free to nominate your own stuff!