Cool Stuff: VisualThesaurus.com
Reading FastCompany magazine the other month, I saw a reference to Visual Thesaurus, an online, graphical thesaurus viewer, and it's just flat-out cool. I love writing and reach for my thesaurus often, but this is much more useful.
Non-subscribers - it's now about $12/year - get a few free searches, and I recommend some busy words like "good" or "hot". The Java applet is actually kind of mesmerizing as the words and join-lines ("antonyms", "is a type of", etc.) move around, and the navigate-by-click is entirely intuitive.
This is just a winner product.