Viral video chart is a great website that gathers all viral videos found on video hosting/sharing websites. It ranks them by number of views and comments in the last 24 hours, last 7, 30 or 365 days and shows for each of them the statistics and evolution of the "viral" trend.
The statistic tracker gives good detailed information about when the viral effect for the video has taken off and shows the evolution of it in a simple graph. It also lists all recent blog posts about the video, as well as the "buzz by languages".
For all of you who want to stay posted with all the latest video content out there, this website is a great way to do so. Although they do not have a twitter account to follow (yet), you can still subscribe to their RSS feed, newsletter, youtube channel or myspace page.
Everything's here: viralvideochart.unrulymedia.com