This week's Trends: trailer proposals, commencement time-lapses, and pets

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 trend of creative movie trailer proposals.
  
  
• We enjoyed a Canuck's parody/anthem that was very popular in Canada.
  
  
• We followed some of the coolest and most popular commencement and graduation trends.
  
  
• We saw a collection of first-person disaster videos as well as footage of the volcano in Iceland.
  
  
• We listed Keenan Cahill's most popular collaborations.
  
  
• And, in what was a big week for pet videos, we helped this now world famous cat from Japan celebrate his third birthday:

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