It is ridiculously hard to find easy/simple animated text. Like the \"Implosion\" on this website http://codecanyon.net/item/jquery-text-animation/full_screen_preview/233445 but
Try Textillate.js! It allows you to animate text with effects such as flash, bounce, shake and more. In all, Textillate.js contains more than 25 effects for you to apply to your text.
Just use fadeIn jquery function (documentation):
$("#button").click(function() {$("#container").fadeIn()});
Sample: http://jsfiddle.net/cVELa/
Its not so hard to create such an effect using jQuery. Create a single element vor every character, move it somewhere and then animate it back to original position.
A simple example: http://jsfiddle.net/doktormolle/dNXVx/