Fact: You can embed third party content (like YouTube or Vimeo videos, Google maps, Flickr images etc.) right into a Joomla module or article without any extra plugin, module or other extension.
But there are two major problems doing it with a fresh Joomla installation: 1. The default editor removes some HTML tags like OBJECT or iFRAME 2. Even if the Super Admin adds content it will be checked against a blacklist and HTML tags which can caused security problems will be removed automatically, too.
The solution: 1. Turn off the default editor 2. Disable the text filtering for your Super Admin