Warning: super-geeky stuff ahead :-)
Today is October 10, 2010, or in other words 10-10-10. This is in itself a noticeable date, but it gets even more interesting when you consider that 101010 is the binary value for 42!
So today is not only 10-10-10, but also the day of the answer to Life, the Universe and Everything!
And to be even more geeky (or scary): guess who made me notice that? My 14 years old son...