Flex “gumbo” Langref released, and other dizzle

Sweet:
Gumbo Livedocs

Awesome:
19 Custom AS3 Classes

This would have helped out on a few projects before:
Multi Column Form Layout

Neato:
Struts with a Flex facelift

Bodacious little Color Pallette site:
ColourLovers

and finally, Colin Moocks little Article:
Charges against AS3