However what we want is to have background spell checking when we type text. Just like in regular word processor. The idea is simple – trigger spell check each time we type something. There’s a problem if we’ll trigger it after each letter – spell check uses Ajax request to server script, it may be very slow. We’ll solve it by triggering spell checking within 3-seconds delay after user has stopped typing.

Here’s the code:

tinyMCE.init({
        //...
	//regular initialization here
	//...
	plugins : "spellchecker", 
	theme_advanced_buttons1 : "spellchecker",
	spellchecker_languages : "English=en", 
	setup: mceSpellCheckRuntimeHandler
  });

And setup function:

mceSpellCheckRuntimeHandler = function(ed) {
  ed.addCommand('mceSpellCheckRuntime', function() {
    t = ed.plugins.spellchecker;
    if (t.mceSpellCheckRuntimeTimer) {
      window.clearTimeout(t.mceSpellCheckRuntimeTimer);
    }
    t.mceSpellCheckRuntimeTimer = window.setTimeout(function() {
      t._done();
      t._sendRPC('checkWords', [t.selectedLang, t._getWords()], function(r) {
        if (r.length > 0) {
          t.active = 1;
          t._markWords(r);
          ed.nodeChanged();
        }
      });
     }, 3000); //3 seconds
  });
  ed.onKeyUp.add(function(ed, e) {
    ed.execCommand('mceSpellCheckRuntime');
  });
};

The code is not ideal, but it works. Feel free to improve it for your needs.
Update. There may be an issue with focus. For example when cursor leaves tinymce it may return back to the editor. Ask me if you have this problem.

1. Enable paste plugin.
2. Add handler for parsing inserted text

So your TinyMCE code will look like:

  tinyMCE.init({
        ...
      	plugins: "paste",
      	paste_auto_cleanup_on_paste : true,
      	paste_postprocess : function(pl, o) {
            // remove extra line breaks
            o.node.innerHTML = o.node.innerHTML.replace(/<p.*>\s*(<br>|&nbsp;)\s*<\/p>/ig, "");
        }
  });

See more info on the official wiki

<table>
<form id="myform">
  <input />
  <input />
  <tr><td></td></tr>
</table></form>

$('myform').serialize() will return empty string for such html. As a result you’ll have ajax request with no parameters, obviously not what you’ve expected. Fix html and everything will work.

<tt>l</tt><tt>d</tt>”. After that you can dynamically change style (color, font etc.) of every letter you want accessing to it during array document.getElementsByTagName(‘tt’).

So, you can create with your text such effects like burning, dissapearing, growing etc. Please, look at http://atuk.boloto.org/fire/ to get sample scripts.