De MonsterDebugger: a Flash, Flex and AIR Debugger

This seems like it could be a useful tool. From the Adobe AIR Marketplace:

“De MonsterDebugger is an open source debugger for Adobe® Flash™, Flex™ and AIR™. Made using Flex™ and AIR™ and maintained by Dutch design studio De Monsters. With De MonsterDebugger you can explore your live application, adjust properties and run methods all at runtime. You can trace objects of any type to De MonsterDebugger and it will show the complete structure of that object in an easy-to-read tree structure.”

http://www.demonsterdebugger.com/

I also ran across a nice video at arctic-code.com  showcasing a sample session.