Yes, it is March 14, 3.14. Oh, really, it is Pi approximately. Pi has been calculated to over one trillion digits past the decimal with computers, according to PiDay.org.
There are some interesting stuff about Pi.
Poetry based on Pi: Not a wake: A dream embodying (pi)'s digits fully for 10000 decimals
Also you could find more books about Pi.
Pi music: please visit http://www.educationalrap.com/music/pi-day
Would you like a Pi's pie? Just Imaging!