Let me proudly point out here how thoroughly I've resisted the temptation to throw in some sort of mouseover script pursuing any number of the obvious "hovering" jokes that spring to mind. Wanna make a hovering joke? G'head.

Gyrocopters: not just for snaggle-toothed guys in old Mel Gibson movies anymore.

(Image citation: Popular Science, October 1965 - same source as yesterday's entry.)