Chafic had an interesting intro session on Flex 2 (more Q&A really), main themes were "MXML is compiled to an ActionScript class" and "code hinting in Flex Builder 2 rocks!". He showed some cool ways of calling AS functions from MXML tags, private and public scope functions, etc. Also a cool example of the @Embed directive that showed embedding a specific movieclip referenced by linkage ID from a compiled external SWF.