Thanks to Scamp for drawing my attention to a list in The Guardian of the top ten virals of 2008.

Immodesty compels me to report here that four out of the top ten were created by Wieden + Kennedy.

They are:
Number 3 – Kobe jumps Aston:

Number 4 – EA Extreme Street Football.

Number 6 – EA Tiger Woods walks on water.

Number 9 – Nike 'Fate' Leave Nothing.