Of interest (and related to the recent wikitech-l threads on uploading
large files) is this new firefox extension that handles transcoding
from * to Ogg/Theora and uploading:
http://firefogg.org/
Not only is this something we may wish to use, but it demonstrates the
viability of a complex uploading widget via a firefox extension. The
extension is GPLed, so it could serve as a starting point for a
commons-uploader firefox extension.