automatic quicktime smil playlist

I've implemented an automatic SMIL playlist for quicktime (and mp4) that
people submit to demandmedia. This is in addition to the Real SMIL
playlists that were already there. There's a playlist for each section,
so probably of interest to this group is the videoblogging section:

or you might be interested in a random sampling from of whole site:

Its kinda beta so feedback is appreciated. In particular I haven't
tested in on a Mac yet.

Relevant to the current discussion, if there's interest I could
implement a script that automatically generates a SMIL playlist from an
RSS feed that contained videos.