At Fosdem 2009, Marc Laporte, gave a lightning talk about TikiWiki (15 min).
TikiWiki CMS/Groupware lighting talk at FOSDEM 2009 (15 minutes)
In the video, you can read the slides as well.
Download video:
http://ftp.heanet.ie/mirrors/fosdem-video/2009/lightningtalks/tikiwiki.xvid.avi
See other videos here: TikiMovies