Has anyone ever had a eureka moment like the fast inverse square root?

SqFrame: A tool to create a square frame with a blurred background for any image, to match the aspect ratio 1:1

Are there any other examples of the use of bit manipulations (bit hacks) such as Fast inverse square root from Quake?

The Global Town Square Is in Ruins

USS Recruit (1917): The Wooden Dreadnought in Manhattan's Union Square

Square pass a cli based multi-platform password manager.

NYPD 'robocop' to patrol Times Square subway station

An NYPD security robot will be patrolling the Times Square subway station

Square is down

Sweden is testing a semi-truck covered in 100 square meters of solar panels