Berri YouTube Gallery gives you possibility to show a YouTube video gallery with customized appearance on your sidebar and all you need is to write the video URLs in the widget control panel. There is no need to register or to get YouTube API. Easy to customize and you can insert an image in the video thumbnail.
Comments, questions and bug reports are welcome: http://www.berriart.com/berri-youtube-gallery/
Free Download: Download this wp-plugin