Despite their adorably puffy tails, squirrels are a genuine nuisance. So it warms our hearts to see the nerds of the world banding together to battle these furry invaders with what they do best: engineering over-the-top solutions like this water cannon sentry system.

This is war people, and you need to defend your bird feeders by any means necessary. So if you've got half an hour to spare—and a vendetta against those suburban rats—check out Kurt Grandis' presentation at Pycon US. He details the awesomely geeky turret-mounted Super Soaker he developed which uses custom Python code to differentiate between birds and squirrels, and blasts away the latter when they're detected on a bird feeder. Nerds: 1 Squirrels: 0. [YouTube via Naked Capitalism via BoingBoing]