The Viral Chart is a pretty nice roundup of the latest popular Interweb viral videos, ads, games, etc.:
Viral Marketing is the future of commercial advertising. Virals can be videos, games or just web pages which are strategically “seeded” on websites, blogs and mailing lists around the Internet.
As soon as Internet users start forwarding the link or the clip to their friends, it’s gone viral and it will continue to spread across the Web, potentially reaching audiences of millions.
The Viral Chart is a huge leap towards quantifying these audiences.