SXSW Update
I came across a list of artists confirmed (thus far) to play at South by Southwest and got a little giddy. Here's some of my favorites:

Architecture In Helsinki
Badly Drawn Boy
Bloc Party
Blonde Redhead
Cold War Kids
Daniel Johnston
Diplo
Emmylou Harris
Girl Talk
Interpol
Mates Of State
Morrissey
Okkervil River
Pete Townshend
RJD2
Rocky Votolato
Scissor Sisters
The Stooges
The Walkmen
Voxtrot
Youth Group
Zach Galifianakis

BONUS!:
I also came across the first single off Timbaland's solo effort, "Give it to Me", featuring J.Timberlake and Nelly Furtado. I gave you a link because all the direct mp3's have been getting shut down. Enjoy!