Counting down the 20 biggest viral sensations of the internet age. From ‘Gangnam Style' and its two billion Youtube views, to the star-studded Ice Bucket Challenge, and the bizarre trends of ‘planking' and ‘unboxing'. These are the viral videos that left us roaring with laughter or shaking our heads in confusion (and sometimes both!) This is an hilarious journey through the social media that has captivated us all.
