FOSDEM is the Free and Open source Software Developers' European Meeting that takes place every year in Brussels Belgium. This year it was held on Feb. 5-6. They do a good job of recording and releasing the recordings of their presentatiosn all under a Creative Commons Share Alike license.
Since they released them in Xvid format and they are quite huge, I decided to re-encode them in webm format at a lower resolution, bitrate, and framerate to make them much smaller and more appropriate for streaming... and posted them to archive.org. I've embedded one of Michael Meek's presentation on LibreOffice below but you can find all of the videos here:
Liberating Open Office Development by Michael Meeks
If you can't see the video in your browser, it probably doesn't support webm yet so as an alternative, download the desired video(s) and play it with your preferred media player. VLC is recommended.