Recently we had lesson we had a visitor come into our class to talk about viral videos.
He started off the lesson by having a class discussion with us on what our interpretations of 'viral videos' were, and why we think they're becoming more and more popular.
He then showed the class a collaboration video on Youtube of all the recently famed viral stars on the internet, and asked us for our views on them.

I personally really enjoyed this lesson as it was very interesting, and i was able to concentrate the whole way through by the way he made it interactive and got us to discuss the topic with him.