Yooouuutuuube.com | a must see service made with youtube api.
“There are some pretty cool add-ons and tools for YouTube: in fact we wrote about more than 100 of them in our YouTube Toolbox. Some are fun, some useful and some – like the tools to download YouTube videos – aren’t necessarily legal.
But the YouTube tool that’s got people buzzing this week is just plain out of this world. Yooouuutuuube.com lets you put tens, even hundreds, of YouTube videos into rows and columns, creating an utterly trippy experience. Just enter a YouTube (YouTube reviews) video ID and frame width for each “piece” of the mosaic, and Yooouuutuuube.” mashable