We are using CKEditor for a software solution we have developed. The problem is that we need a module to allow the users to insert javascript elements into a page without having to go into the source code window. We have integrated the media_embed plug-in that allows Youtube videos and other Iframed content (such as Facebook feeds) to be inserted and that puts a placeholder image in the page.

We need to basically merge that module with more functionality that recognises the Script tag from the Twitter (and similar) embed code and puts a similar placeholder on the page.