I just added a pretty nice ActionScript 3/ABC2/Flex 2/Flex 3/Flex 4/AIR disassembler to the CRCETL, namely Nero 440:

http://www.woodmann.com/collaborative/tools/index.php/Nemo_440

Most existing Flash disassemblers and decompilers stopped working with the introduction of Flash 9 / ActionScript 3, so it's nice to see some good new generation tools.