A quick way to show that a character is a genius is to have him recite pi to an absurd number of places. Pi, with its endless parade of decimal digits, has both mystique and geek cred - it has its own day, it's splashed across mugs and T-shirts, calculating 1-10 millions of digits of π is a very common way of testing your CPU's power, and it's honored by movies and songs. Most of us never memorize it past a few places, so anyone who can fire off a hundred surely must be a genius, right? Examples of Mouthful of Pi include: