There is however a not-so-secret message in the first Bitcoin block relating to the banking bail-out of 2008. Mind you I haven't confirmed the presence of this message myself personally but I believe it's there.
Quick bit of fun for anyone running Bitcoin Core on Linux (with the default blockchain location):
> head -c 300 .bitcoin/blocks/blk00000.dat
This prints the first 300 bytes of the blockchain to the console. Along with some clearly non-ascii data, you'll see the headline in plain text.