There are two apps that make most of the other apps on my phones (I have both a Samsung Moment and a Palm Pre) seem almost useless. One is Stitcher (which lets you stream podcasts) and the other is Pandora. This is because audio is essential to me. Without something to stream on the way to work, while walking in Manhattan, or simply while relaxing at home, I would go a little crazy.
I've heard some people say that some of this year's SXSW Interactive presentations were too "101." All I can say is that I attended some presentations/sessions/panels that were solid good. Some were technical in nature and others were more about the stories behind-the-scenes.
One of my favorite stories was that of Pandora, as told by their CTO Tom Conrad.
I opted not to go to Gary Vee's presentation, the live Buzz Out Loud (I'm a huge fan), and many other ones at the same time because I wanted to learn more about Pandora. It was worth it.