Cabe, I think it was mostly music until the last few years. It's been known as an edgier version of the Austin City Limits Festival. Of course, the Austin City Limits Festival is so huge there is an edgy festival buried in it. I'd like to go to SXSW too. It might be a tad overwhelming with scores of big and little venues throughout the city. The City Limits Festival has the advantage and focus of a single location.
SXSW hasn't been edgy for years. Like most things that become popular and mainstream (including TED or Coachella), it doesn't attract truly alternative thinkers and artists anymore. MtyMx is a good alternative to SXSW and e.g is a good alternative to TED today.
But, I think SXSW is edgier than CES for new companies to launch in the right atmosphere. IT's good to go and see what's hitting the mass market.
Depending on how much TI's board will end up costing it will be interesting to see what 3D printing hobbyists will make from it. The potential could be astronomic and could include not only custom made mice but miniature smart robots or even personal mobile devices such as MP3 and media players as well. It will be interesting to see what these new mini-boards will be used for in the near future.
Yes, NadineJ, SXSW is certainly coming into its own. But I hope it doesn't begin to compete with CES. SXSW has a nice alternative edge. This is the even that debuts the edgier side of music, film, and technology. I say let it stay edgy.