jquery.sliced.css

.sliced {
  position: relative;
  width: 640px; 
  height: 400px;
}
.tile { float: left; }

jquery.sliced.js

;(function( $, window ) {

  var _defaults = {
    x      : 2, // number of tiles in x axis
    y      : 2, // number of tiles in y axis
    random : true, // animate tiles in random order
    speed  : 2000 // time to clear all times
  };

  /**
  * range Get an array of numbers within a range
  * @param min {number} Lowest number in array
  * @param max {number} Highest number in array
  * @param rand {bool} Shuffle array
  * @return {array}
  */
  function range( min, max, rand ) {
    var arr = ( new Array( ++max - min ) )
      .join('.').split('.')
      .map(function( v,i ){ return min + i });
    return rand
      ? arr.map(function( v ) { return [ Math.random(), v ] })
         .sort().map(function( v ) { return v[ 1 ] })
      : arr;
  }

  $.fn.sliced = function( options ) {

    var o = $.extend( {}, _defaults, options );

    return this.each(function() {
      
      var $container = $(this);

      /*---------------------------------
       * Make the tiles:
       ---------------------------------*/

      var width = $container.width(),
          height = $container.height(),
          $img = $container.find('img'),
          n_tiles = o.x * o.y,
          tiles = [], $tiles;

      for ( var i = 0; i < n_tiles; i++ ) {
        tiles.push('<div class="tile"/>');
      }

      $tiles = $( tiles.join('') );

      // Hide original image and insert tiles in DOM
      $img.hide().after( $tiles );

      // Set background
      $tiles.css({
        width: width / o.x,
        height: height / o.y,
        backgroundImage: 'url('+ $img.attr('src') +')'
      });
      
      // Adjust position
      $tiles.each(function() {
        var pos = $(this).position();
        $(this).css( 'backgroundPosition', -pos.left +'px '+ -pos.top +'px' );
      });
      
      /*---------------------------------
       * Animate the tiles:
       ---------------------------------*/

      var tilesArr = range( 0, n_tiles, o.random ),
          tileSpeed = o.speed / n_tiles; // time to clear a single tile
      
      tilesArr.forEach(function( tile, i ) {
        setTimeout(function(){
          $tiles.eq( tile ).fadeTo( 'fast', 0 );
        }, i * tileSpeed );
      });

    });

  };

}( jQuery, window ));