<object width="480" height="385"><param name="movie" value="http://www.youtube.com/v/_J-UnoLMqdU&hl=en_US&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/_J-UnoLMqdU&hl=en_US&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object>
it looks smooth.