with CMML Wiki it is possible to annotate and index multimedia content the wiki way. its still in an early state of development, but looks interesting.
some sample content can be found at
http://media.annodex.net/cmmlwiki/
what about adding some clips from V2V to test it out?

Or what about a way to load a v2v clip including the metadata from the rss2 feed into such a wiki...
Or better, the wiki would check RSS2 feeds and download new torrents/ogg files and import them. that way one could take a feed of a conference, like incommunicado and enrich those talks with additional links, comments and background information in the wiki