Today is October 10, 2010. Many believe that three 10s in a row is lucky (see various gambling games). There were several weddings today. Births and birthdays were celebrated.
But for those who understand binary code, today is the answer to the question of life, the universe and everything.
101010 in binary is 42 in base 10.
For those who do not understand, please refer to Hitchhiker's Guide To The Galaxy.
