What Were The Most Popular StumbleUpon Photos and Videos of 2011?

If I was pressed to answer, I’d probably say StumbleUpon was the first social aggregator site I ever used regularly.  Even before Digg, I had a little StumbleUpon toolbar which had just one big button which read “Stumble!”.  Each time I’d hit it, I was provided with a new interesting page from the web that other Stumblers had picked as a favorite.  It was also one of the first places that my first blog posts went viral.