time

http://ntpi.openchaos.org/pps_pi/ Creating a GPS-backed NTP server on a Raspberry Pi.

http://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat There will be a leap second on June 30.

http://time.is/ Find out the accuracy of your computer clock.

Gil's LotD
http://www.scottstratten.com/movie.html Motivational video on using time wisely- there, I spoiled it for you
http://www.blogthings.com/amenglishdialecttest/ this calculates where your linguistication comes form