…depends always on the point of view – here is a nice point of view, the Red Hat pro-linux campaign “Truth Happens”. There you will find a collection of some nice videos, papers, etc.
The videos are really worth a look, and they are all presented in Ogg Theora.
That reminds me that I still haven’t finished the project off reviewing and rework al the articles dealing with Og and xiph.org in the german (!) Wikipedia… But I already did Xiph.Org Foundation, Ogg, Theora and Vorbis. And the other articles are not soooo important, and even if you rework them they will not be as long as the others – here is an example: Tremor Codec
And it’s bed time for me know, university starts early tomorrow 😉