Tents are set up on the campus lawn. Several hundred pizzas have been consumed. Laptops everywhere have freshly-applied stickers. And our mysterious secret musical guest has been revealed.

Our first annual open Hack Day kicked off with an amazing 90-minute performance by Beck, who recently graced the cover of Wired Magazine for his passion for mashups and remixes. Who better to inspire cleverness and creativity among 500 developers for their all-night journey toward creating the coolest hack? Beck and his band put on quite a show.

To get everyone in the hacking mood, Beck put together this video just for the occasion. It's too cool not to share.