<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/mjgaxdl-z-g&rel=1"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/mjgaxdl-z-g&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>
Something went wrong there... To embed YouTube videos, click the YouTube icon, then paste in, only the part after the `=`.