A jQuery Plugin For Good-Looking Clocks And Countdowns – FlipClock.js
The flipping elements in information boards (like the ones in airports) are usually loved by many.
FlipClock.js is a jQuery plugin which replicates this effect to present anything related to time.
It has support for working as a clock, countdown or timer and can be customized completely with CSS.
There is an option for auto-start, multiple methods exist for controlling it (start, stop, getTime, setTime..) with their callbacks.
Also, it has a full-featured API for extending the functionality further.