Saw this on Ajaxian - apparently Google has just come out with Javascript API for YouTube that will allow you to develop “the flexibility to customize the YouTube player with their own controls, player ‘chrome’, and even behaviors like custom playlists and menus.”. The YouTube Chromeless Player Reference is certainly interested and it looks like Christian Heilmann has written a video captioning system that lets you annotate as you pause. My spidey sense tells me this has BIG potential and some awesome stuff should be appearing over the next few weeks.

JW FLV Media Player supports playback of any format the Adobe Flash Player can handle (FLV, but also MP3, H264, SWF, JPG, PNG and GIF). It also supports RTMP and HTTP (Lighttpd) streaming, RSS, XSPF and ASX playlists, a wide range of flashvars (variables), an extensive javascript API and accessibility features.