"So, what's so special?" you say...
Well, in short, it's a free knowledge page about an open standard showing an example of open media designed with free software, which I am viewing using exclusively free/libre open-source software. The little rabbit picture on the right side is actually a video... playing at the time of the screenshot. Contrarily to Flash (using 45%), it just uses about 1% of my CPU power to play it in streaming.
Yes, the page is giving me free knowledge I can contribute to, redistribute and use freely. It discusses OGG, an open format to encode videos. It shows me the short film "Big Buck Bunny" which has been designed by the Blender foundation using and composing free media (can re-use, distribute, modify). I'm opening the page using Firefox on my Ubuntu GNU/Linux system, running a native video player (I'm not even sure which but I'm sure it's not the proprietary software Adobe Flash Player), into my webpage itself.
This all means we have finally reached a step where information *can* flow freely, in any form of media. I'm definitely in love with all that.