sydcode

This plugin finds YouTube links in post content and imports the video comments. 
Users may also post comments to the video after signing into YouTube.

YouTube Comments

This plugin finds YouTube links in post content and imports the video comments.

JoshPTV

Joshkremer

VideoNab is the best way to add videos to WordPress. Furthermore, VideoNab adds a fully responsive video stream to your website in a beautiful, organized list. Add any video directly from YouTube, and VideoNab will automatically place them anywhere on your site via a simple shortcode. The design is slick and created specifically to compliment any WordPress theme. 
Video playback is presented in HD via an elegant design that includes it’s own commenting, pagination, sharing, and more. These beautiful videos will drive traffic to your site by encouraging comments and sharing direct links to your content. Perfect for video tutorials, contests, video portfolios, filmmakers, and other users who need to organize their videos and present them in style.
Key Features
<ul>
<li>Manually add videos to your site via a simple interface</li>
<li>Facebook commenting system for each video</li>
<li>All videos are organized in a modern design fit for all sites</li>
<li>Specify the number of videos to display, and other customizations</li>
<li>Fully Responsive for displaying videos on all devices</li>
<li>Designed to visually integrate into any WordPress theme</li>
<li>Sharing system that links other users directly to your site instead of YouTube</li>
<li>Re-title Videos and their descriptions as needed</li>
<li>Edit permalink titles of videos as needed and enhance SEO</li>
<li>Latest YouTube API</li>
<li>Pro version available: <a href="http://videonab.com/product/videonab/" rel="nofollow ugc">Aggregate youtube videos automatically, voting, and more!</a></li>
</ul>
Check out the live demo: 
http://www.videonab.com/tutorials/ 
(Yes, we used VideoNab Lite as the video tutorial tool for VideoNab Pro – to show you how it works in the wild!)
Also See: 
VideoNab Documentation: http://www.videonab.com/videonablite-documentation/ 
VideoNab Pro (LOTS More features!): http://www.videonab.com/product/videonab/

VideoNab

VideoNab is the best way to add videos to WordPress. Furthermore, VideoNab adds a fully responsive video stream to your website.

YouTube Comments vs VideoNab