Clocked by Two Smoking Barrels

The world’s only double-barreled cannon is now proudly displayed on the lawn of the Athens City Hall, about a hundred miles off Route 1. It is a monument to every geek who ever had what seemed to be a really good idea at the time. —Michelle DelioClocked by Two Smoking Barrels (Wired)

Unless you’re into history, this story is a little dry until the appearance of the robot with the shotgun.