Game-Changing DJ Scratch App for iPad

Every once in a while, I see a demo for an app that I truly believe will be a game-changing app for a certain field. This video is definitely like that, for the iPad and for DJs. Could you imagine ditching your laptop in favor of an iPad—not just out of convenience, but because the iPad actually does a primary computing function better than your laptop?

One can only hope for interesting and refreshing apps in every field (I'm personally waiting on Coda for the iPad...).