If you are planning to attend SXSW 2009, you should go ahead and bookmark this entry now. I will have info on just about every single SXSW event that requires an RSVP, and I plan to post each one worth attending, as they become available, into this entry.
Here are the first three that have come to my attention. Information on the bigger parties like Fader, Paste, and Mad Decent should start popping up soon enough. If you see something I am missing, please feel free to leave it in the comments or send me a message.