Just some quick links I use as reference from day to day.  It is currently a short list,  but I wanted to quickly jot these down so I at least had it started.

ColdFusion

• CF QuickDocs
• RIA Forge - open source CF apps
  
• VarScoper - An essential tool
  

Flex

• Flex.org

GRAILS / Groovy

• Groovy-Forum
  
• Nabble Groovy Forums
  

JavaScript

• W3 Schools JS Reference/jsref/default.asp
• YAHOO YUI: JS RIA JavaScript Library
• Ext: JS RIA JavaScript library
• CSS Properties to JavaScript Cross-Reference
• Spry API and Documentation

ASCII

• ASCII Codes (ascii.cl)
  
• ASCII HTML Codes (ascii.cl)
• AsciiTable.com

Other

• Experts Exchange
  
• A great Regular Expressions helper
• Subversion Wiki