To the extent that consciousness is useful, it is useful in small quantities, and for very particular kinds of tasks. It's easy to understand why you would not want to be consciously aware of the intricacies of your muscle movement, but this can be less intuitive when applied to your perceptions, thoughts, and beliefs, which are also final products of the activity of billions of nerve cells.
SUM has been turned into an opera at the Royal Opera House in London (Composer: Max Richter, Director: Wayne McGregor). The London Evening Standard hails the opera as "immersive, meditative and sweetly fascinating". Read about the background of the collaboration in Wired.
Read a profile of David in The New Yorker: The Possibilian: What a brush with death taught David Eagleman about the mysteries of time and the brain by Burkhard Bilger.

Click here to watch David's talk on possibilianism at PopTech. Executive director Andrew Zolli wrote: "This is one of the best talks ever at PopTech. Everyone should watch this."