The Book of Life?

It has been reported that a 53,000 word book (presumably not 'Fifty Shades of Grey') has been stored by scientists as DNA (http://www.guardian.co.uk/science/2012/aug/16/book-written-dna-code?INTCMP=SRCH). It has been pointed out that DNA is the ultimate, compact data storage tool (better than existing digital) as 1 g can store the equivalent of 455 bn Gigabytes of information. We may be replacing our CDs with genediscs.