Viral Videos play an important role in Brand building. Some of the popular viral videos which have helped in Brand building are Apple 1984 ad, Old Spice my man, Blendtec’s will it blend, nike’s football worldcup ad & others. Viral Videos get millions of views in a short time & gets shared on social networking sites. Apple’s 1984 ad helped in building Apple brand name. Blendtec’s will it blend ad gave it a big brand name & its video is top videos of the year. There is no hard & fast rule as to how the viral videos need to be created. It taps into the basic emotions of the human beings & users usually feel attached to these videos. Viral videos have also helped video sharing sites gain traffic. There are several websites which give weekly ranking of top viral videos.