I've been reading The Back of the Napkin by Dan Roam and it's a great book on visual thinking. He provides some structure to common problem solving skills that involves drawing. However, I found a video where Kermit the Frog shows the dangers of this kind of visual thinking.
Kermit and friend demonstrates the dangers of visual thinking.
Apparently Lutz Roeder has sold Reflector to Red Gate. Red Gate has said they plan on keeping a free version available. Red Gate has a lot of great development tools, such as ANTS Profiler and SQL Prompt. It will be interesting to see what they do with Reflector (I'm hoping for a Visual Studio add-in that allows you to debug into assemblies where you don't have source code :)).
Lutz's announcement
Red Gates announcement
New download page for Reflector