Here are some interesting things to know about leap years.

* A troptical year is 365.242190 days long. A regular year has 365 days and a leap year 366.
* February 2008 has 5 Fridays, the last time that happened was in 1980.
* The Gregorian calendar was adopted to account for leap years. The Julian calendar had too many.

Read more interesting info about leap years at timeanddate.com