This was announced last week but is pretty important. Mozilla Hacks announced that Google and MPEG LA have come to a licensing agreement on the VP8 video codec. According to the announcement, Google has the right to sublicense VP8 to anyone, thusly freeing VP8 from the cloud of litigation around it.
This is a really big deal. Up until now there was no clear way to create truly open source video content and tools for HTML5. The currently most popular video codex, H.264, includes several patents and must be licensed for a small fee. Not something that is compatible with an opens source model. Now, HTML5 and the Net has a truly open source codec in VP8. Thank you Google!