My shop has been using Subversion for a number of years. It is a reliable tool and works well for our team. One area that Subversion could handle better is tracking merge information. Our team is always working on multiple feature branches and merging those changes back into the main line of development. The current merge support works fine (most of the time), but doesn't handle complex situations well.
Debugger Visualizers are one of the best productivity additions to the Visual Studio debugging experience. After reading Vardi's post showing the wide variety of custom visualizers, I decided to start maintaining a list of visualizers at dotnetpowered.com. After some internet research, I've documented 32 visualizers for everything from Regular Expressions to Linq Queries. Check out the list and rev up your development environment today! If you know of any other custom visualizers, please send them my way.