Top 10 YouTube Mashups of All Time

Of the thousands of open APIs available, one of the all-time most popular is the YouTube API. We now list 440 YouTube mashups in our directory. Naturally, some are better than others. Below are our Top 10, as determined by popularity and editorial review. Do you know of other good YouTube apps that we've missed? Just let us know in the comments.

Be sure to read the next Mashups article: Best New Mashups: Social Graphing, Realtime Emotions and a Virtual Assistant