This week's Trends: Rebecca Black, global hits, and babies

Each weekday, we at YouTube Trends take a look at the most interesting videos and cultural phenomena on YouTube as they develop. We want take a moment to highlight some of what we've come across this week:

• We tracked the influx of Rebecca Black covers and parodies that hit YouTube as the 13-year-old became a national phenomenon.
  
  
• We looked at how popular cartoonists in Jordan have reacted to the major events taking place in North Africa and the Middle East.
  
  
• We studied the search and viewing data behind March's three biggest trends.
  
  
• We looked at some of the most popular viral clips from around the world.
  
  
• We teamed up with Urlesque.com to explore why it is that family videos become so popular.
  
  
• And we watched as Pixar Animator and YouTube Singer Nick Pitera's new Disney medley quickly picked up over a million views and became a most-shared clip:

Check back every day for the latest about what's trending on YouTube at: www.YouTube.com/Trends

Kevin Allocca, YouTube Trends Manager, recently watched "Tornado in Hempfield."