If you're looking for something to do on Saturday, March 14, then check out BikeHugger's Mobile Social SXSW Urban Ride. The hosts describe it as "an intersection of bikes, technology, and culture. We ride, blog, party, and give away product."
Meet at 5th & Neches (Brush Square Park) at 2PM for a leisurely ride around downtown Austin. It ends around 4 but the party continues with a BBQ!
The ride & BBQ are free, but you've got to sign up for both. BBQ attendance requires a SXSW badge OR an Urban Ride RSVP. You can RSVP HERE.