In an unexpected move Microsoft created a website with download links for available Visual Studio 2005 hot fixes that were previously available only through Microsoft Developer Support. This is great news because there was little visibility over what hot fixes existed for certain problems with Visual Studio.
The list of available hot fixes for download can be found here. Some of them address corner cases which don't affect a lot of people, but if you are one of the corner case users it's great to finally get it fixed.
As a side note, Service Pack 1 for Visual Studio 2005 has been in development for quite some time, the beta program closed by the end of October 2006, and Microsoft is saying the final version will be released any day now. The service pack will include all available hot fixes of course, but after that the download web site will be the main source for fixes until Service Pack 2 comes out (if there is even going to be one).