Power of Crowdsourcing: Rooted in the principle of ad hoc assembly via online communications, flash mob is the most literal and physical manifestation of crowdsourcing.

Guile's Theme goes perfectly with these shots of the reaction to President Obama's reelection. It's time for Mitt Romney to go home.

4chan users discovered that a picture of the image board's founder Christopher Poole (a.k.a. Moot) can be seen sandwiched in between two photographs of Rick Santorum on the former Presidential candidate's website.

The cat used in this image macro series comes from the music video for the 2005 single "Triumph of a Heart" by Bjork.

Vote on your favorites and add your own in our Reaction Videos gallery with over 100 videos!