Not nearly as much of a priority as QT/MOV support on Safari (requested above,) but how about support for iFilm?
http://www.ifilm.com/ifilmdetail/2721326
They offer links for embedded video:
HTML Code:
<embed width="410" height="332" src="http://www.ifilm.com/efp" quality="high" bgcolor="000000" name="efp" align="middle" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="flvBaseClip=2721326" />