2) National Geographic produced this montage, which is basically its own "best tornado videos" clip. Not only does it compile a bounty of great twister footage from around the country, but it's set against a nice, subtle techno beat. Cows reacting to a tornado is as funny as you'd imagine, and watching people helplessly film their houses being obliterated is as painful as you'd imagine.




1) Jim Reed, the guy who chased a tornado on foot in our No. 10 clip, and his assistant Katie Bay discover this funnel cloud in the air above them before it touches down. They're lucky at first when it snakes away from them to land, but its invisible tip quickly becomes a roaring tornado that heads right for them.


< Top 10 tornado videos: No. 4 and No. 3


Curious how tornadoes work? Check out MNN's Tornadoes 101.


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