Beer Cannon
  This is definitely irresponsible, but I can't resist.  Old Milwaukee Light drinkers in Wisconsin construct a cannon from which they fire beer cans.  There are actually two cool clips, and I guess I'll go with the montage--for it's elegiac celebration of destruction.   You might also enjoy the set-up vid, wherein the beer cannon is introduced and explained. 
And now to how it is used--
And now to how it is used--