Joomla 1.5.*  Plugin can display Facebook Share and Like button in your article, position on top article or on bottom article text and both side. Button's can turn on or turn off, so you can see only one button  the Like button or Share button .

Options you can see in the pictures.
Demo is located at each article on this site.

With this plugin, you can embed YouTube videos into articles simply by copying and pasting a video URL from YouTube into an article and set your player size, color,autoplay and others parameters.This plugin is for Joomla 1.5.xx and 1.6xx, 1.7xx