Video Showcase is a plugin that uses video links from Youtube and Vimeo to generate thumbnail images for the videos and display those images as video embed links on the front end of your site. When a visitor clicks one of the thumbnail image links the video for that link is displayed in a styled thickbox. The different video links are stored in groups so that the different groups can be displayed through out your website by placing them in widget areas or using shortcodes.
3 Step Process
Step 1. Create a Group
Step 2. Add videos to the groups
Example of what to put in the "video URL" are outlined in red in the images below: