Yes. the stadium dudes may have set it up, but its good to finally see these people join the sporting party!

I spent a couple of years in Wisconsin; they do this every match. :) Together with the crowd responses for the Green Bay Packers (the professional team from the same area -- the one in the vid is college (yes, that's how college rolls, over here)), this was the closest I found to the sports fans back in Europe. They go nuts!

Don't dis 'em, quik. 

I don't know...I've seen better (poznan for example)...

If you cut your finger you get the same effect...