According to a blog called Cateto, Apple's Quicktime X in Snow Leopard will play Flash FLV moviesagain. Quicktime supported FLV movies up until 2007. After that, you needed Perian to play FLVs and SWFs in Quicktime.
No longer.
Some have insinuated that this might lead to flash on iPhone. We'd be hopeful, but that is a big stretch. FLV support only means that Quicktime will play H.264 video in a .FLV wrapper, not that all of the complex Flash interactivity will be
